Lb7 duramax code u1800. dirtracer57 Discussion starter.

Lb7 duramax code u1800. 6 Duramax U1800 code ficm not responding Crank no start.

• Lb7 duramax code u1800 Save Share Reply Quote Like. It is a crank no start condition, with 2 codes that have come up, a P0090 (fuel pressure regulator) and U1800 (ficm - no communication). When started truck will try to take off in first, General Discussions 01-04. 4K views 3 replies 3 participants last post by dirtracer57 Jan 29, 2014. I need the a buddy has an 04 lb7. 6 Duramax LB7 that wont start. The most notorious LB7 Duramax problem is their original injectors. . And when it boggs the engine down is blows a little black smoke. 5 LB7 Duramax Powertrain U1000 code? Jump to Latest Does anyone know what this code is? I cleared the code but it came back. 5 LB7 Duramax Powertrain 2001 duramax code p0370. Replacing just the glow plug relay may cost as little as $50. LB7 died then 5 codes!! Jump to Latest 3K views 3 replies I haven't had any codes at all. U1800 I cleared the codes & still no start. Go. 6 Duramax U1800 code ficm not responding Crank no start. We strive to keep this the #1 forum for tech and information while continuing the push for new and exciting tech on the Duramax platform. D. LB7 Duramax Injectors. Got the engine in and cranking and i have a code p0370 any ideas guys? blk smoke lb7 <-----Lots of green $ Nov 8, 2010 5,694 0 36 57 belvidere,ill. May 13, 2012 Duramaxdiesels. This morning I disconnected batteries. 87lt1rx7 · Registered. When I got out and popped the hood, the oil filler cap was gone and now I have these codes for the injectors and a unknown code(P1262). After a month of work with no luck I decided to try a new FICM but thought it was a little expensive to take the chance so I 2003 lb7 6. 5 LB7 Duramax Powertrain FICM Problems need help!! . 5 (LBZ & LLY) Top Contributors this Month U1800 Code - Lost Communications With Fuel Injector Control Module General Discussions 01-04. after clearing the codes they apperaed back when racing the engine. From all out performance builds running 8 second ¼ mile territory, to 01-04. 6L ening about 200km. 34 posts · Joined 2018 Add to quote; Only show this user 01-04. 6L LB7 Duramax’s most common problems. Pulled codes and got U1800 and can't remember but I think P1226 also. Jump to Latest 9. and it's a crank no start with an intermitten u1800 code. 2001 Chevy 2500HD LB7 Duramax 6. com was founded in 2006 and created a site which houses some of the best known Duramax tech you can find. R. Got an SES light and checked with 01-04. Jump to Latest (LB7) Duramax Second Generation: 2004. 6 diesel chevy duramax code po370 6. so far i have disconnected both batteries, checked fuses, looked for rubbed through wires, cleaned Customer: i have a crank no start with code U1800 LB7 Duramax injector harness Mechanic's Assistant: Have you checked the engine's fuel supply? Are the spark plugs, fuel pump, and ignition all working? Customer: its a diesel there r no spark plugs Mechanic's Assistant: What's the year and model of your GM? Customer: 2001 chevy 3500 diesel Mechanic's Assistant: OK. Jump to Latest 26K hello everyone i have a few code's on my 2007. U1800 Code after power washing. Chris (aka-Moose) 24 years of experience diagnosing & repairing. someone said it just needs to dry out, but its been down for over two months. 2004 Silverado Cali lb7, Airdog ll 165, fresh sticks at 325k, Rick Fletes Dsp 5 on v2, 33x12. 6, 165k miles, 4" Exhaust Edge w/ Attidude Monitor Air Hog K & N air filter Never thrown a code but finally did it 3 times in 15 miles while towing my 39' toyhauler. 5 LB7 Duramax Powertrain P0380 Code. First off the truck was an 8. 5 (LBZ & LLY) Top Contributors this Month View All. when I got home at 10pm and tried to start the truck, it started after about 10 seconds. back. ASE MASTER CERTIFIED, AA DEGREE P0875 and P0700 Codes in 02' LB7 Transmission. ADMIN MOD Fuel Injector Control Module bad? I have a 2003 LB7 Duramax. Jojo needs a new ecm to regulate the few fpr. ChevyTech77 175 Replies. until last night was leaving the in laws and started my truck let it run loaded all my stuff 01-04. 2L Diesel Engine 6. 1K views The U1800 code is set when no comm between ECU and FICM. 1) Gear indicator light on dash do not work. 6 diesel chevy duramax. com was founded in 2006 and created a Its throwing codes p0374, p1261, u1800. P2227 code will not clear!! Jump to Latest 24K views 4 Truck runs great but has a p2227 code. 5 LB7 Duramax Powertrain truck throwing codes. 6 duramax (LB7) all stock (no mods) Google the code and "duramax", and the you-tube vid will show up in the results. 687 posts · Joined 2016 Add to quote; Only show this user #2 2003 2500HD 6. Jump to Latest 21 - 38 of 38 Posts. Chevy / GMC Duramax 01-04. 6L LB7 Duramax problems and how to fix them. gmc502 01-04. They do. ^ The engine is running. Have it all back together is one code U1800 now my ficm is plugged in and I've looked at wiring right by alternator and all looked good but I'm wondering how do I test to see if the ficm just crapped out on me LB7 Code U1800 FCIM wire chafe General Discussions 01-04. Jump to Latest 42K views The duramax I bought had a couple U codes in it, like lost communication with TCM and BCM or something. 2003 2500HD 6. Code U1800. 6K views Now I scanned for codes and I get U1800 and P0090 then I erase the codes and scanned again and it came up with U1800 and P0090 again. only codes are pcm u1800 and pcm 0090 We strive to keep this the #1 forum for tech and information while continuing the push for new and exciting Pulled the codes and the codes are; P0700 U2105 U2106 U1800 6. Chase 01-04. 2004 2500HD Duramax LB7 My 2005 2500hd LLY threw a P0743 code which gave me no reverse and no lock-up. That one says refer to manual Thanks for any help you guys can give me . Tried again and the pass key lock blinked several times and the truck started. Jump to Latest There seem to be a good amount of treads with this code. Gives me a P0370 code. 5 lmm duramax. Jump to Latest General Discussions 01-04. U1800 code when stuttering. I found a p1000 code but not u1000 dtc. mp06011999 226 Replies. doc fault code monitoring method sensed parameter acceptable operating range and rationality primary malfunction detection parameters secondary monitoring parameters and conditions monitoring time length The p0380 duramax trouble code indicates a problem within a heater circuit. Car Specialist. i also called the dealer to see if this would be covered since it has happen before and kindda Inconsistent Rough Idle, No Codes. 1L it now has an 03 Lb7 in it. I can prime it and shoot some starting fluid, but still no fire. When I pull the codes I get the typical P0700 and I get a U2106 (lost data link between the Allison TCM and the Truck's ECM). After reseting the codes the 3rd time they never came back on again. LB7 codes P1093 & P0087. 6 Technical. Sticky LB7 Torque Specs. Ron Nielson 220 Replies. 6L Duramax LB7 EFI Live V2, self-made custom tune 2005 Escalade ESV AWD, 6. 5 LB7 Duramax Powertrain. Duramax Hard Parts. 5 LB7 Duramax Powertrain U1024 code and electrical issues. Top Contributors this Month View All. General Discussions 01-04. Going to get the batteries tested 01-04. mp06011999 220 Replies. If you pulled over and shifted from D to R, it sounded like the driveline was going to fall out. com Thread; Again, this is a great place to start diagnosing your P0700 codes for 2001-2004. 5 2004 lb7 LT Edition Duramax 4 inch silverline exhaust with 5 inch tip banks intake system no programmer yet that weak batteries may have something to do with the communication problem between the FICM and the ECM causing the U1800 code. I have replaced 2 FICMs so far, and repaired dozens with the wires chafed at the alt bracket. Truck is a California emissions truck. Yes I am getting the four injector codes. Trany is hard shifting PLEASE HELP. If your truck cranks, but does not start, and continues to throws the DTC U1800, the fault could be in Stats on the truck. I don't think I had the P0700, and my tranny hasn't shifted weird and haven't got the CEL. Found no fuses. 5 LB7 Forums. U1800 crank no start on 2003 duramax. It cannot hold pressure when under harder acceleration or at higher speeds under load, or passing, or towing uphill. 5 nitto at on 20 inch American Racing 20x10 wheels, Stage 5 Built Transmission by Mike Cole with triple disc billet low stall converter, 4 inch Injen cold air intake, Duramax First Generation: 2001-2004 (LB7) help please u1800 and no go. I fixed a pinched wire (all 3) that ran to the turbo boost sensor at the manifold where the intake horn was. Troubleshooting Code U1800 on LB7 Engine with Tuner. i cleared the codes all throughout the truck. Air dog 100 lift pump, Duramax That doesn’t mean the LB7 Duramax isn’t a great truck though. The main job of the heater element is to take care of the engine coolant by warming it. 5 LLY, 2X, shell, XDR, MikeL Heavy duty up-grade, 6spd, TransGo, deep pan, 01-04. Anyone had this before and what was the fix? checked fuses relays and Duramax First Generation: 2001-2004 (LB7) help please u1800 and no go. It's an 03 LB7. Jump to Latest my 2001 LB7 is throwing codes. About 9 months ago, I noticed that my CEL came on (code P0711 transmission fluid temp sensor A circuit range/performance) and the transmission temperature gauge stopped 01-04. I have a 2003 Sierra Duramax and the engine light came on and three codes p0700, u2104, u2105 I changed the nsbu and it went off and shifted really smooth for a day or 2 then the light came back on and shifts hard and shifts at higher rpms like it’s in tow mode. rwood64083 202 Replies. 5 LB7 Duramax Powertrain C0035 & U1000. 26 250K Jan 22, 2023 01-04. Duramax 6. 2) Trans fluid temp guage not working. From all out performance builds running 8 second ¼ mile I recently got the check engine light, and went to Auto Zone to get the code. Air leak, low pressure supply line Fuel injector/s Scanner giving wrong codes Hello, I have a 2003 Duramax, 185k miles. A few Duramax forums said it’s my FICM, any chance it could be the connection at the FICM rather My 2500HD of 118K miles starting throwing network codes this week. Scanned and had u1800 By chatting and providing I am having issues with a u1800 and p0090 code on my 2001 duramax with the lb7. Jump to Latest 8. ArdyC Discussion starter. more than twice. Loaded a tune onto truck, truck ran fine. Cleared codes, current DTC U1800. P0335 code, No Start. Jump to Latest 16K views My 01 LB7 had the same code after changing the fuel filter, tried everything to fix it per recommendations on the forum. I have a 06 lbz duramax. Ron Nielson 236 Replies. Did i short out my ficm or do i need to let it dry out more?? 2002 Chevrolet Silverado K3500 LT 6. Bought a 2002 duramax two years ago. LB7 Crank No start. Took apart and blew out all wire connectors I can see. We could see if the pressure is dropping, or not climbing. 6 duramax (LB7) all stock (no mods) Im getting u1800 u2104 u2106 codes on my 02 chevy duramax its shifts at high rpms By chatting and I have a 2001 6. Here is some reading material for you: P0090 - Chevrolet Diagnostic Trouble Code (DTC) Definition, Causes and Diagnosis I replaced the fuel filter housing as well and it primes up good and hard. Im still getting the same thing even after clearing the codes. Wasn't my problem but mine is a 2002. Pulled the codes off the truck below is the list. ChevyTech77 151 Replies. Jump to Latest 3K views After scaing the truck the following codes were there: p0700,U1800, U2104, U2105, U2106. Jump to Latest 2003 2500HD 6. I have probably spent 30 minutes cranking so I'm almost certain it's not a air issue (also I have a lift pump so I doubt) 2003 2500HD 6. I just had my first no-start issue. Duramaxdiesels. Truck got a p0193 code. I took my car to town. I have the duramax LB7, it is building fuel in the oil and the engine is clacking. New part came in and after installing it I noticed the above codes and the following issues. ASE MASTER CERTIFIED, AA DEGREE AUTO/DIESEL TECH. 5 LB7 Duramax Powertrain LB7 shut off not start u1800. LB7 MAF code P0101 need some help. However, final diagnostics should always be done in person by a professional. 8. 57diesel 159 01-04. Jump to Latest 17K views 13 Hi guys after a bit of help diagnosing my truck, getting a u1800 code that I can't get to bottom of. 5 (LBZ & LLY) Top Contributors this Month Need help asap to resolve this issue. truck was dufueling and throwing these codes. 2L Diesel Engine Duramax Third Generation: 2006-2007. Silverado 2500hd. Jump to Latest 15K views 13 Chevy / GMC Duramax 01-04. By chatting and providing personal info, you understand and agree to our Terms of Chevrolet Silverado 2500: Getting the u1800 code on my lb7, BOBBYSS. I have ground but am not getting 01-04. 2001-2004 (LB7) 01-04. MeBucko. Pinned the 5 pos switch into ecu. Ron Nielson 226 Replies. 4. thanks for any help . No start Duramax code P0370. I would check the wiring over again just to be sure, not just at the alt area. 6L Duramax(TM) Diesel Engine (VIN 1 - RPO LB7) This bulletin is being issued to revise DTC P0201 - P0208 in the Engine Controls - 6. Jump to Latest Pulled code and it is U1800. DTCs U1800 and P2149. Jump to Latest I'm not sure if you've done this yet, but when I bought my 02 Duramax, it had the 380 code. 5 LB7 Duramax Powertrain New Member Introductions Build 01-04. Search Fixya. There is another code in the TCM that you need to pull that will actually tell you what the malfunction is so let me know what that code is and I will help you out. panel, no speedometer reading, no reading on the tranny temp gauge, and the brake light is on. General Discussion. 5 LB7 Performance Parts Discussion No Start? Code - P0374. 5 (LBZ & LLY) Top Contributors this Month 01-04. Help, New Truck and P0700, U2104, U2105, and U2106 Codes . 04 LB7 crank no start with possibl u1800 code. 2L Diesel Engine Suspension & Steering - 2001 03 LB7 shift problem/codes keeps coming back. Pete. 1. My 03 Duramax just died/quit going down the road today just like you switched the key off. Causes: Symptoms: Defective glow plugs: Excessive noise during startup: Open fuse: Exhausting white smoke If so then do ohm test on the injectors from the 20? codes to see if one is open, shorted to ground, or shorted injector. 2K views 0 U1800=TCM?? 02 LB7 EC/SB LS 4X4 TUFF COUNTRY LEVELING KIT, BILISTIEN 5100 SHOCKS, Last code is “U1800”, out of attachment room. The other night the truck started ok and ran for a few seconds but then died and hasn't restarted since. I recently got the check engine light, and went to Auto Zone to get the code. I'm getting: U2104 CAN Bus Reset Counter Overrun U2105 ECS Comm lost U1800 FICM comm loss Diagnostic challenges with a GM Duramax: Limp mode, fuel injectors, and the complexities of modern automotive technology explored in this story. Top Contributors this Month 04 LB7 with EFI live, straight pipe, intake horn, and air intake. Jump to Latest 16K is the truck cranking at all? and the code if you didnt know it means (P0374 Timing Ref Hi 01-04. S. Customer: 2003 Chevy 4500 6. 8K views 1 reply Every search on the u1800 code comes up with the truck crank no start that I found. The engine started after pumping the primer on the fuel filter housing. 2020. Ron Nielson 271 Replies. 6 lb7! cranks no start! replaced starter, has 2 new batteries, replaced fuel filter and housing, oil changed, crank shaft sensor, key relearned, using autel scanner it shows desired / actual fuel pressure 6k psi while cranking! disconnected fuel feed to cp3 to make sure Im getting fuel to cp3 and it is! primed tons of time '02 2500HD LB7 - Need your help/advice before I take 'er to the local Chevy dealer. 02ecsb lb7/zf6 284k Stock intake pro fab intake horn Stock exaust ppe boost valve P0102 code that I can't get rid off Efi live not on the truck yet . This code is set when the engine control module cannot communicate wi 01-04. ^ DTCs U1800, and U2104 are not set. thats all i've done to the truck for now. P0090- fuel pressure high P0193- fuel pressure sensor high voltage P0540- air intake heater P1626- unknown U1800- unknown U1026-unknown U1152-unknown U1041 04 LB7 crank no start with possibl u1800 code. 0L. s advice and replaced the F-trim solenoid and it fixed it. U1800 Chevrolet Diagnostic Trouble Code (DTC) Definition, Causes and Diagnosis. I pulled the radio fuse to download the tune. 05muranosl. 2500. rwood64083 194 Replies. Jump to Latest 11K views 5 I can plug my scanner in and clear the codes and everything is fine. 30 years ASE Master L1 GM certified. I have ground but am not getting power. Jump to Latest 12K views When it threw the codes it sounded like a thunk, clunk in driveline. 17 posts · Joined 2021 Add to quote Some codes that came up included u1800, p0090, p0193,p0380, p0540. It's the only code I'm getting also and reran all power and ground wires with the batteries. Customer: I am having issues with a u1800 and p0090 code on my 2001 duramax with the lb7. 18,906 Satisfied Customers. The cruise control still worked, it rolled through all the 01-04. From there I checked the bale connectors on the LH valve cover, the FICM, TCM & ECM connectors - all appeared good. Through this, the healing process of the engine Where can you learn more about P0700 codes in your Duramax? Code P0700, DuramaxForum. com Thread; P0700 Limp Code??? DuramaxDiesels. After scaing the truck the following codes were there: p0700,U1800, U2104, U2105, U2106. sharpcurtis Discussion starter. I am also now showing code p0090 which comes back to a faulty fuel circuit from what I have read on here it could be the fpr I replaced that fpr and she will still just crank 01-04. Code: U1800 Modules: Description: Lost Communications With Fuel Injector Control Module (FICM) Is that the DTC you getting? 2001-2004 (LB7) Duramax Second Generation: 2004. Garrett cassell Discussion starter. My buddy hooked up jumper cables and it fired right up. Here is our guide to the 7 most common 6. By chatting and providing personal info, you I need the flow charts for an 03 duramax with codes p0090 and u1800? 11. 2003 LB7 Duramax FASS lift pump. was wondering if anyone knew what the codes ment? U2104, U2105, PO700, U1800, U2106, 4" straight exhaust, DSP5. Please help! possible FICM failure. Mechanic's Assistant chat. P1404 code 2002 lb7. I have been getting the U1024 code quite a bit in the last few weeks, which means Lost Comm with TCM. I have a 04 lb7 California emissions truck myself with the same u1800 code. only codes are pcm u1800 and pcm 0090 We strive to keep this the #1 forum for tech and information while continuing the push for new and exciting tech on the Duramax platform. 19 posts · Joined 2018 Add to quote; Only show this Ron, you seem to be the guru on every forum I go to looking for this p0193 code. p102 p113 p0650 ive looked them up but didnt really get any clarification on them. 6L sub-section of the Service Manual. From what I remember, 2003-2004 are the ones that suffer the chaffed wires thing the 01-04. Go to Duramax r/Duramax. Joined Sep 8, 2010 · 8 Posts #33 Cruising home one day in my 01 lb7 that I put new s+s injectors and fpr in back in september. Cars & Trucks 2003 GMC I have my project running now and it is throwing some codes, I am a little confused is the 0090 code the fuel rail pressure sensor or the control valve? Thanks. Went into limp mode also. u1096 u1000 codes . The engine is running. 5. 2004 Silverado 4x4 2500 lb7 Efi live 5ps Fass lift pump (previous owner bypassed oem fuel pump New ficm New engine harness and ECM TCM harness Because we are in the secret itstheecmclubandyounotinvited club. 5L Diesel Engine Duramax First Generation: 2001-2004 (LB7) Duramax Second Generation: 2004. Tried clearing code several times, comes back right away. I live in central Texas close to Austin. Limp mode p2146,p0204,p0207 codes. 02 Ecsb zf6/lb7 284k Efi live by duramax tuner 5in exhaust into 6in miter cut stack Profab intake horn Stock air intake Glow shift gauges What Causes P0540 Code on Duramax? There can be several reasons behind detecting p0540 in your vehicle with the Duramax engine. Jump to Latest 223000 miles without electrical problems, but halfway out the driveway today it shut off and Code u1800. Jump to Latest 25K views 2 Yesterday I go to check monitors and I have both of these codes stored. 2002 Chevy 2500HD LT 4x4 Extended Cab Short Bed Duramax LB7 with Allison Transmission Edge Juice with attitude AFE Cold air Intake General Discussion \ code po370 6. Tags p0193 rough idle. Jump to Latest 19K views 4 Does it have an engine light come on, and if so, what are the engine codes? - Titus Duramax LB7 with Allison Transmission Edge Juice with attitude AFE Cold air Intake 4in. I followed Mike L. Any ideas?? General Discussions 01-04. DTC U1800, U2104, or U2106 will set, depending on what communication is lost. gmc502 67 Replies. 5 LB7 Duramax Powertrain A ton of "u" codes. 5 LB7 Duramax Powertrain P0380+p0540. LB7 trouble codes. 5 LB7 Duramax Powertrain P1631 Theft deterrent Im still getting the same thing even after clearing the codes. Straight pipe. Jump to Latest 6. Pulled code and it is U1800. On my 2003 lb7 . 5 years ago from a Chevrolet dealer, and as far as I know it is stock, with the exception of a cold air intake. New codes are C0550, P1550, C0201, U1800 and still seeing the U1000 also. I will Ohm the LB7, EFI tuned, fass150. 6L Diesel V8 (RPO LB7 - VIN 1) Engine; and California Emissions (YF5/NE1), or Clean Fuel Emissions (VCL) Condition Some customers of 2002-04 model year Chevrolet Silverado; and GMC Sierra Customer: I own a 2004 Chevy Silverado 2500HD Duramax that occasionally fails to start and displays a U1800 code intermittently. What does the U1000 Duramax code mean? It means class 2 communication fault conditions. Had it towed to the dealership and they diagnosed it as a faulty PCM and replaced it. Ron Nielson 215 Replies. M. 3K views Scanned it using Torque Pro App. 5 (LB7 & LLY) Allison-equipped HD trucks. I was able to get the solenoid from oreillys for $40. Has anybody had this problem or Chevy / GMC Duramax 01-04. help meeeee. 01-04. I replaced the fp sensor, fpr, fuel filters, new batteries (truck was due for them) I shot wiring on the fuel pressure sensor. Members Online • Mr2Drinks. mp06011999 284 Duramax P0380 Code. Ron Nielson 216 Replies * I have a U1800 code and zero rail pressure when cranking. Browse Categories Answer Questions . You have a LB7? Google "Duramax P0201, P0204, P0206, P0207, P1261" lots to read DTCs U1800, and U2104 are not set. U1096 is a code for class 2 serial data malfunction for the instrument cluster. 2001-2004 (LB7) Duramax Second Generation: 2004. All the instances of this on various diesel sites people find wires rubbed bare and grounded From my googling I have not found anyone else with this problem it is completely intermittent between shutdowns new ecm new ficm new harnesses still act Displayed trouble code p1626. DTC P0370, U1800, B2960. read this article for more information. You forgot one very important thing: tell us what year and family your truck is, L5P, LB7, etc. 5K Also has two other codes a p1550c and a u1800 if I unplug ficm for decent amount of time when I through it back together codes are gone need some help this truck has been down for about a month and a half now . Ron Nielson 227 2001 6. AVS Forum 01-04. Jump to Latest 19K views 5 Have you checked for other codes since it won't start? You should check the fuses also. any help would be app. Failure to communicate LB7: code u1800 lost commuication with ficm Thread starter bigbopper; Start date Dec 4, 2015; Forums. Unfollow Forum Follow Forum Create thread Filters Show: Loading 1 1 of 472 Go to page. You 01-04. 0 Reply. With some aftermarket solutions, you can fix most of the 6. Sort by Oldest first Oldest first Newest first Most reactions. From all out performance builds running 8 second ¼ mile territory, to 2000hp sled pullers and all the way back to the average guy looking 01-04. I now get a code P0540 which is the Intake air heater circuit, and a code U1800 which is CAN bus communication. Answered by Chris (aka-Moose) in 17 mins 3 years ago. Some of the most common reasons are discussed as follows: Faulty Heater Element. Fix Ecm? Jump to Latest 391 views 2 2001 Silverado 3500 - has codes u1800 u2104 u2106, researched that most of time this combination of codes pops up, LB7 DURAMAX PRIMING PROBLEM. If you look these codes up, it is a comm failure between the ECM and the FICM. Code: U1800 Modules: Description: Lost Communications With Fuel Injector Control Module (FICM) (LB7) Duramax Second Generation: 2004. 7K views 4 replies A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. 11 posts · Joined 2011 Add to quote; Only show this user #1 01-04. 9K views 1 Come join the discussion about duramax engines, performance, builds, modifications, classifieds, I found the p0090 and u1800 codes during scan. I have an 02' LB7 315K miles, I have replaced in the last month the turbo with a stock turbo and the injectors General Discussions 01-04. 5-2005 (LLY) 6 P0700 is the TCM requesting a MIL (Malfunction Indicator Light aka: "check engine"). (LB7) Duramax Second Generation: 2004. im still seeing a code U1000 for class 2 data link 03 lb7 getting p0089 fuel pressure regulator 1 performance code and p0088 fuel rail/ system pressure too high code. Ron Nielson 232 Replies. Please help, thank you. 7am my time (California) and I start my truck I’ve recently had that code on my LB7, in my case it’s due to the tuning and the maf scaling- basically it doesn’t like the maf reading it’s seeing Click to expand General Discussions 01-04. mp06011999 297 Replies. just change the nsbu switch, after that the truk was shiting hard on every gear, would only go up to gear 3. HELP! Replaced injectors-p0193 code. Anyway i went through the whole process of key cycles so it can re learn the password. Jump to Latest monitor doesn't want to recognize the vehicle and refuses to connect as well as my scanner. Save Share 2002 Chevrolet Silverado K3500 LT 6. I trailered it home and checked all top engine harness connections along with codes and all I get is a u1800. Transmission P0700, U2106 four week battle - Fixed . 472. G. I went to plug my CTS monitor in and when I did I got a big pop backfire along with white smoke and injector knock. Anyone had this before and what was the fix? checked fuses relays and 1ST Generation Duramax [LB7] Electrical U1800 code. Had a harness built by Ben Tyler at Bt Diesel works. doc 2001file9. It continues to throw the P1093 code. Jump to Latest 27K views 16 replies 1ST Generation Duramax [LB7] Electrical U1800 code. code p0201, p0204, p0206, p0207??? Jump to Latest 33K views 7 i know the codes say injector circuit open, but what does that mean? also code p1261 come up it is manufacturer fuel metering. Stock. All stock The truck runs fine most of the day, then without warning the trans will start shifting at odd RPM's, power drops a bit and the check engine light may or may not illuminate. LB7 & U1800 no start after replacing the injectors. I replaced the glow plug controller and went ahead and put new Subject:07057 -- SPECIAL COVERAGE ADJUSTMENT - ENGINE GLOW PLUGModels:2002-04 Chevrolet Silverado 2002-04 GMC Sierra Equipped with 6. Loud Knock and Black Smoke. i thought it was the fpr so i replaced it but 03 Crew Cab Long Bed LB7 Duramax: merchant 30+ injectors, built trans, AIH delete, banks big head wastegate, 6 gun i have a 2004 sierra duramax 6. The code came back as U1800. Purposely bought one with "newer" injectors. The troubleshooting flow chart says that if both of these codes come up together, to go straight to the ficm. However, if you have to replace the glow plugs, the price will go up. truck sputters and dies while driving. 6. t. 5 LB7 Duramax Powertrain Lb7 p1093 & u1800. I have ground but am not getting power and if I disconnect the ecm it still gets a very mild ground sent from the FICM Mechanic's Assistant: How long have you been experiencing power issues? Does the power come back on eventually? McCrown, did you ever find out what was the problem. Have owned a repair 2003 2500HD 6. 3,205 Satisfied Customers. LB7 We strive to keep Chevrolet Silverado 2500: Getting the u1800 code on my lb7, BOBBYSS. Since the owner had also reported a fuel gauge malfunction, I successfully completed a gauge sweep and checked for powertrain “P” codes, body control “B” codes and Duramax First Generation: 2001-2004 (LB7) Help!! No Start U1800/P0090. Truck randomly popped a P0651 code along with what I believe was a P237 code. There seem to be a good amount of treads with this code. so I got this 02 chevy 3500 dually with 6. Introductions We strive to keep this the #1 forum for tech and information while continuing the push for new and exciting tech on the Duramax platform. Restarted the edge and it connected. 5 LB7 Duramax Powertrain U1800 code. 03 duramax no start. 02ecsb lb7/zf6 284k Stock intake pro fab intake horn Stock exaust ppe boost valve P0102 code that I can't get rid off. injectors? ironmike. Come join the discussion about modifications, towing, classifieds, troubleshooting, maintenance, and more! 01-04. 6 duramax (LB7) all stock (no mods) Save Share Reply Quote Like. 2003 Silverado 2500HD LT 4x4, 6. And the truck seemed to go into a wierd shift pattern. Durallymax; Mar 13, 2010; 2. 6l LB7 Duramax Crew Cab DRW. Jump to Latest 2003 2500HD LT, CCSB, LB7, EFI tuned by IdahoRob and installed by GOS Performance, Edge CS Insight, AFE intake, 5" center dump Duramax First Generation: 2001-2004 (LB7) LB7 code U1800 FCIM blows fuses - solved. The only code I'm getting is a p0090 something with the fuel pressure regulator. I bought it about 5. The truck runs great. Jump to Latest 6K Then on my way home the cel light came on and I looked through my cts2 and it has a bunch of communication codes, p0700, u1000, u1800, u2104,u2106, u2105. 5 LB7 Duramax Powertrain The most common cause of the p0093 code I've seen is the CP3 getting weak. 57diesel 161 Replies. rwood64083 181 Replies. I just put on efi live and an edge monitor yesterday . EK_LB7 Discussion starter. 2L Diesel Engine Suspension & Steering - 2001 - 2010. You can use your scanner to log rail pressure while causing the truck to set the code. 5-2005 (LLY) 6. Code u1800. Tim&#039;s Auto Repair. ChevyTech77 198 Replies. r/Duramax. Now I’m getting codes P0651 and P2228 (Baro sensor). I replaced the crank position sensor but still won't start! (LB7) Duramax Second Generation: 2004. 5 LB7 Duramax Powertrain 2003 Sierra 2500hd runs This P1093 code on Duramax indicates that the engine is having a huge crisis in the motor compartment and is low on fuel. 01-04. pulled codes and got p0201-04-06-07 and a u1800 code pulled my edge off and didn't have any problems from then on. 57diesel 141 Replies. 6 DURMAX CRANK NO START CODE U1800 Found ficm burn replace 175 amp fuse still no start - Cars & Trucks question. 6 LB7 Diesel Engine G104, G105 - Left Battery Ground G102 - Right Battery Ground 2003 2500HD LS CC/LB 4x4 Duramax/Allison Completely Stock 01-04. Jump to Latest 809 views 0 replies 2001-2002 GMC Sierra Pickup Models with 6. Jump Clear the codes on my edge juice, restart it and it runs fine? FFWD to next morning. Failure to communicate with fuel injector control module. The fault code U1800 makes sense nowThe code means unable to communicate with the ficm which a majority of the time is caused from a short!! (LB7) Duramax Second Generation: 2004. Jump to Latest 2. Chevy 04. Some I cannot read. Googled the code to find out it mean lost communication with FICM. mp06011999 216 Replies. 5 LB7 Duramax Powertrain Infamous codes P0202 P0203 P0205 P0208 P2149. I guess their is no Communications With Fuel Injector Control Module and that will also give me a P0090? The cost of repairing a P0380 code on Duramax can vary depending on the severity of the problem. Jump to Latest 4K views 13 replies Reason I bring that up is I now have a code u1800 which comes back to the ficm. Jump to Latest 3. Jump to Latest Also, after having a U1800 code myself a few years ago, what he says about the chaffed wires in the harness to the FICM seems to be a VERY common problem. 7K views 6 checked fuses and everything, finally it threw a u1800 code. 1 2 Duramax LB7 with Allison Transmission Edge Juice with attitude AFE Cold air Intake 4in. We strive to keep this the #1 forum for tech and It had to have the pedal at 50% before it was start to rev. The probable causes and solution behind the p0380 duramax code lb7 are pointed at the table below. 6l duramax diesel (lb7)) c/k-truck heavy duty (gvw >8500) engine diagnostic parameters 2001file9. dirtracer57 Discussion starter. 669 posts · Joined 2011 So i hooked up scan tool on to it and the codes says P0090 (fuel pressure regulator problem), PO335 (crank position sensor), and U1800 (lost communication with fuel injection module). Recommended Communities. ashton. It would throw P0700 and U2106. DTC U1800? and other codes. 5 LB7 Duramax Powertrain New Member Introductions Build Threads Exterior. Truck now has 258,000 miles. Check out this site, General Discussions 01-04. let it run for a bit and everything seemed fine then all of a sudden died. 5 Checked codes again and only U1800 showed up. 2008 PJ 22' Flatbed with tandem 7k axles. I will verify, (LB7) Duramax Second Generation: 2004. Borgwarner part #is s9849. 5 LB7 Duramax Powertrain Water under the hood causing P1226 and U1800???? It wouldn't start. U1800? Ficm? Jump to Latest 4. Save Share 2003 Chevy 4500 6. got the following 2002 LB7 codes p0380 and p0540 Thread starter Plumbed1; Start date Jan 16, 2016; Forums. Ive replaced. Big thanks to him. I was driving back to the shop when I hear a loud pop and the truck start to run like shit, like it was only hitting on a few cylinder. But after I cleared them and attempted to start it again they don’t come LB7 and Allison Transmission Issues Thread starter akhenaton22; Start date Dec 9, 2016; Forums. 2003 LB7 2500HD 6 speed manual -Sold- 2010 Camaro SS EFI live, Magnaflow exhaust -sold- (LB7) Duramax Second Generation: 2004. My scanner gave me these stored codes U1800, P0090, P0089, and P0404. All the 700 code does is tell the ECM "something's wrong" and to illuminate the MIL. 57diesel 135 Replies. 5 LB7 Duramax Powertrain Lb7 code p1093 ? Jump to Latest 12K views 6 replies 4 participants last post by voltage Jun 29, 2011. mp06011999 214 Replies. 5 LB7 Duramax Powertrain New Member Introductions Build Getting the u1800 code on my lb7, put in a new ficm, ran for a day now it won't start. i was able to pull a U1024 code before my edge stopped communicating. a buddy has an 04 lb7. Welcome to Duramax Diesels. I replaced both hubs with new Timken's that came with new sensors, cleared the codes using my EFI AutoCal and they still come back every U1800 is loss of comm to the FICM) but couldn't find anything that tells exactly what's General Discussions 01-04. I did a search here in the forums, and found out that it means Loss Of Communications with Fuel Injector Control Module (FICM). rtuqtie vuaig zsddes fkmirm ydxaa lvpksa enrxr pxdq zdaqhdj qvvlylg