Code P1089 VVEL Control Shaft Position Sensor Bank 1 Circuit. "> Code P1089 VVEL Control Shaft Position Sensor Bank 1 Circuit. "> P1089 Code Duramax - Code P1089 VVEL Control Shaft Position Sensor Bank 1 Circuit">Code P1089 VVEL Control Shaft Position Sensor Bank 1 Circuit.

P1089 Code Duramax - Code P1089 VVEL Control Shaft Position Sensor Bank 1 Circuit">Code P1089 VVEL Control Shaft Position Sensor Bank 1 Circuit.

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Engine running, observe the DTC information with a scan tool. fenbendazole cancer joe tippens blog The cost of repairing a P0380 code on Duramax can vary depending on the severity of the problem. P026D - injection quantity too high. I have a P24A0 code-DPF closed loop temp too low. Check engine light comes on, reduced acceleration message comes on the dash and cooling fan seems to run full speed. ae outdoor power north liberty ia Among the popular choices is VS Code, a lightweight and powerful code editor developed by Micro. P20EE: Nitrogen Oxides Catalytic Converter Efficiency Below Threshold. The 2015 Chevrolet 2500HD powered by a Duramax 6. If you want to test then see the instructions below. A normal reading would be approximately 40 MPa (5,802 psi) with the engine cold, and 30 MPa (4,351 psi) at operating temperature. I told them that one more time and I am getting a new HPFP. taurus g2 trigger upgrade Inspected engine air filter and found filter was restricted and excessively dirty. This morning when i started my truck shortly after the check engine light came on code number p0671:glow plug 1 control circult was wondering witch glow plug is bad. We've got an exclusive Square promo code for hardware. The truck seemed to be ok for a few weeks and after the DOC was replaced we were able to run a regen. I think this is fairly common but can’t find any true fix data. 5 gallons of DEF hoping to at least get by for a time. This statement shows the appraised value of your property, tax rate and applicable exemptions. Appears to be related to the NOX sensor. Interesting if this is the issueit would be the first HPFP issue on record for the CTD. • P1089: Fuel Rail Pressure Performance During Deceleration Fuel Cut-Off • P163A: Control Module Fuel Pressure Regulator 1 Control System Circuitry Performance • P163B: Control Module Fuel Pressure Regulator 2 Control System Circuitry Performance • P2293: Fuel Pressure Regulator 2 Performance. 2017 Sierra 2500HD Denali Dmax. Metallic, 05+ HD Hood & Grille, 155k …. Be sure to tell them the vehicle repair history as it may provide hints to mechanic. 4in rancho lift, 35" dunlop fierce attitudes, 4" downpipe back exhaust, banks air intake, Russell ss braided brake lines, efi and edge insight cts, energy suspension controll arm and sway bar bushings. Model year 2017 marked a big change for GM with the release of their highly acclaimed L5P Duramax coming hard out of the gates with a class leading 445 horsepower to take the holeshot against the competition, at least for the time being. 2017 duramax dpf sensor CEL code P1478. I'm planning my 3rd visit and it. Everytime the weather gets cold, the truck starts throwing this code at various times P0106 Manifold Absolute Pressure/BARO Sensor Range/Performance. P2002 code will set if the properly functioning system detects a cracked or broken DPF. It took us about eight hours, but we finally ice picked the connector after going through the entire diagnostics …. Duramax Sixth Generation: 2017-2019 (L5P) 2018 L5p. When there is no trouble found in the fuel pressure regulator, the next step is to check the fuel pump output. Code is P20B9, def heater I believe. Dealer said they replaced the DEF tank and sensor. New Build with P0089 and P0090. The cost to diagnose the P1339 code is 1. However, if you can’t repair it because of a worse condition, you can easily remove the pump. The dreaded P1050 code and help needed. P0093 – Fuel system leak -large leak detected – OBD2 Trouble Codes. Inspect the fuel pressure sensor electrical connector for corrosion or damage. The problem will be either wiring or connector to the FPR,engine control module problem or FPR problem. This same thing happened a few months back while out of town and light went off before I returned and didn't come on till …. I have a 2017 Chevy Silverado hd3500 6. 4 weeks later while towing my car trailer the truck started vibrating and all lights came on the dash and shut down. Of course tomorrow is a holiday and not sure. These codes don't seem very common on Duramax's hoping someone out there has a few good ideas for things to check. Joined Jun 1, 2013 · 7,438 Posts #41 · Jul 29, 2015. Finally did a fuel filter change, fuel filter housing clean and flushed the fuel line with 2-3 gallons of fuel. 2008 Chevy D-max 2500HD 305,000 miles when traded. Jump to Latest off then the p1448 still remained i cleared it shut off the truck an restarted it it didnt return …. It is setting the code on first start up. In other words, when the powertrain. 2001 GMC Sierra 2500HD Duramax LB7 4x4, Ext Cab,SB, Black ARP Headstuds Socal injector holdowns Built Suncoast Trans Fass 150 lift pump 3. On some diesel engines, the PCM will operate the glow plugs for a period of time after the engine is running to reduce white smoke and engine noises. 47k miles, mostly use to pull my trailer. com was founded in 2006 and created a site which houses some of the best known Duramax tech you can find. C1100 is for brake booster vacuum sensor performance but with a diesel you have hydraboost so no vacuum sensor. I clear the code with the Edge insight. Check for broken, bent, pushed out, or corroded pins in the connectors. ⇒ It may be necessary to use a generous enough amount of dielectric grease in the connector to reach the entire terminal and use J-35616–16 (LT GN) terminal test tool and drag the tool up to 10 times to find/identify. My normal driving with a mix of highway and country roads the mpg is around 15-16. No not a fault of the lift pump. Condition/Concern: A dealer may need to perform a repair on the rubber portion of the fuel supply (suction) lines. OK, Message on dash says to service DEF system, 147 kilometers until reduced max speed 105 km/h. 2015 2500 check engine code P21DD. This bulletin, numbered 23-NA-193 and dated November 2023, is aimed at addressing specific diagnostic trouble codes (DTCs) that have been …. 0 equipped GMC very shortly so curious if these are. Unplug the Fass and see if your code goes away. 2024 Silverado 2500HD - Picked up on Saturday, 4 days and 401 miles later the CEL comes on with P0402. All stock and recieved the P1050. I have a code that I can’t look up on my truck. Perform the following steps when encountering a P2610. 6, check engine light comes on, vehicles looses power and drops to 60 mph top. The 2011-2016 Duramax suffers from a high pressure fuel pump issue unique to this year range. Jun 2, 2021 · Duramax L5P Engine Problems. CE light came on over the weekend and pulled code P11CB. There are many things that can trigger the P0087 code. The change fuel filter warning and all my original codes are up plus an additional one related to the fuel pressure regulator 2 on the new fuel rail. I have a 2019 GMC 3500 Sierra with a 6. Dealer Diagnosed it as a NOx Sensor 1 that "Failed Internally". P0087 code low rail fuel pressure. Sorry if I'm in the wrong part for this question. I recently had this issue with my truck with the p1093 and p1094 codes, loss of power, etc. How to Reset oil life and fuel filter reminder on 2018 Duramax. Sold: 2004 Duramax LB7 2011 3010 Heartland Cyclone HD 35' Toyhauler. Here's what you need to know, plus a coupon code. If your having a low rail pressure code check this first it could save you a costly repair bill! We have seen this more than once it’s now a must to check fi. Ensure right side lines, injectors and rail fittings are clean and dry prior to assembly. stevens model 311 20 gauge value Ron Nielson - Most of the information I provide relates directly to my 2008 LMM - Your truck may be a little (or a lot) different. If there’s no codes most likely you wasted your time taking it in for they can’t duplicate it. I just got this code, took the truck into the Chevy dealer and they didn’t really seem to know what to …. 3/14/2024 I put a cab from 04 on to my 02 duramax and transmission. Hoboes were a widely displaced brotherhood who illegally hopped trains and journeyed across the country, taking odd jobs wherever they could find them. The ECM uses the fuel rail pressure sensor to continuously monitor fuel pressure. If the powertrain control module (PCM) detects a problem with the fuel pressure regulator (designated #2) or its circuit, then it might trigger code P2294. So, you should take the necessary action to repair a fuel pump. I world hit the throttle to get in the interstate and it would not go over 2k rpm. This sensor is responsible for monitoring the position of the valve in the intake manifold. The DEF is injected into the SCR catalyst to perform the …. I know the lml’s had more issues at the fprv when you tuned them but. Replacing just the glow plug relay may cost as little as $50. This control module is located just above the heater tank. P1029 came up on my 23 duramax today. I was able to move the harness and get the code to clear and there is some witnesses makes on the harness. P0747 - Chevrolet Diagnostic Trouble Code (DTC) Definition, Causes and Diagnosis. Wait for about 15-20 minutes before reconnecting the battery. Urea is produced synthetically from ammonia and carbon dioxide (CO2). Got the P24C7 code while towing, twice (cleared it with the iDash and it popped on again about 100 miles later). I have ran the exhaust brake and can positively say that the vanes are not stuck. Sometimes phantom or invalid codes will show up but it is usually a one time thing due to some kind of a glitch. im just out of ideas any advice would be. It's covered under their 6-month 6,000-mile warranty. The manual says this can happen if the wrong fluid is added to the tank but at 5,000 miles I have yet to add any. P1089 – VVEL Control Shaft Position Sensor Bank 1 Circuit. The fuel filter has to be perfect before you look for any other problems that are in the diagnostic list for a P1093 code. Old Trucks: 2010 Chevy 3500HD 567,000 When Traded. They could find what that code us for. Large leaks go into the return system and flow back to the tank, these are not external leaks. Oct 29, 2015 · LML-Duramax said: I've tried to do a little research and have lacked a good answer. We strive to keep this the #1 forum for tech and …. Has anyone experienced a code with the surging?. 2019 Chevy Silverado Duramax 89,000 miles, p1089 code coming back on for the fourth time going back to the dealer again GM has a trouble tree to follow for the mechanics, wiring,connector & the latest was a fuel pressure sensor, after 195. Apr 19, 2011 2,427 128 63 Western PA www. 6L (Y L5P) 6-spd (1000) P026D — Fuel Injection Quantity Higher Than Expected. 3521 / 3529 / 8511 / 8563 / PM / DFTMN. I live in a colder climateNorthern Alberta. If you’re looking to shop at IKEA online, you might be wondering how to get the bes. chad face meme tiktok I have had all 8 injectors replaced a few months back. Code switching involves moving back and forth between two languages while in a conversation. Here's a snapshot of the code from the manual. Here are the symptoms of the P0190 code: Check Engine Light / Service Engine Soon Light. P228B | Chevy and GMC Duramax Diesel Forum. P026D, P1089, P163A, P163B, P2293, P228A, P228B, P228C, and/or P228D Brand: Model: Model Year: VIN: Engine: Transmission: from to from to Chevrolet Silverado 2017 2018 Silverado 2500HD/ L5P 3500HD 2019 2020 Silverado 4500HD, 5500HD and 6500HD 2019 2020 L5D GMC Sierra 2017 2018. 2 V between the 5 V reference circuit terminal 1 and ground. DTC P244C runs continuously when the above condition is met. Took out the Tech 2 and have a Commanded Pressure of 5838 and an actual of 19,875. We may be compensated when you click on. 6L L5P All GMC Sierra 2017 - 2018 All All 6. I suggest you do the "bottle test" to check the FPRV-- [Fuel Pressure Relief Valve] that is the sensor on the fuel rail. in this forum in the entire site. My 2015 has 57,000 miles on it and got this code yesterday, and its not running right now, I cant find any information on this code anyone help me out some. Want to write clean code faster? An HTML and CSS code editor can help. Once confirmed, crack the bleeder valve and hand prime until fuel squirts out. After checking those components, take the vehicle for a test drive with an OBD-II scanner connected to track …. 5" turbo back straight pipe w/6" tip. Had this issue for about 4 weeks now, random instances of P1089 code. On the trip out there was a 25mph head/side wind but on the way home no wind. After driving 45 minutes has there been problems reported with 2001 Duramax Diesel 6. I will try adding def in the morning, I drove 1200 miles towing heavy the last two days. stelzercasey Discussion starter. When your vehicle gets old, naturally, there will be debris and alien particles in the fuel rail. Jump to Latest Follow 6K views She started up and started knocking pretty bad and through a P0193 code. Designed to accurately monitor fuel tank pressure. Update: Some offers mentioned below are no longer available. Shut the truck off and came back 5 minutes later to find the truck not starting. The sensor in my 2019 GMC Denali hasn’t worked worth a dam since the truck was about 2 years old. Code P0189 is not a code that is listed for a L5P. I assume that the fix requires that the truck be taken back to the dealer because it part of the emissions, so I hope it covered by the warranty. DURING DECELERATION FUEL CUT OFF. I currently suspect it's my fuel pressure regulator#2 but can't find any command specificatio. Yesterday morning I stopped at a donut shop to grab donuts for the work crew. I have put about 1,200 miles on it so far and just got a check engine light so I ran the code and it said P3196 and U062F. 5 gal just covering the 30 miles, plus the extra 1 gallon going to the 9th injector. Jumped in the truck this afternoon and did a 'cold' start, about 50F. Just a quick video of the L5P duramax fuel pressure regulator location. I run an Edge Products Evolution CTS2 on my truck. Sent from my iPhone using Tapatalk. paychekplus lost card Sometimes it sets the code without setting a CEL, occasionally the CEL illuminated. I used to get the p0089 code in the morning intermittently. Step 2: Inspecting The Fuel Pump Sensor Data. DTCs P0102 and P0103 are Type B DTCs. as with all my videos i try to give the most information in the least amount of time as possible so i don't waist your time. Developing apps normally needs experienced programmers who are familiar with development. If the truck is running right I’d try to clear it and see if comes back after driving around a …. N Fab running boards, Duraflaps, Rhino lined bed. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Made a service appointment and was about to bring it in and the light went out. Pulled the air filter and cleaned it/washed it, no luck. 2L Diesel Engine Suspension & Steering - 2001 - 2010 Top Contributors this Month View All. If you have installed a Duramax in anything it was not designed for, Post it here. Check engine light comes on and have loud injectors. but when I exccelerat and get to 20-45 mph it starts to idel high and then low and feels jerky. Compatible with both OBDI and OBDII vehicles. In the initial step, we look to detect the issue with the aid of the P1093 code. There are several reasons for the P2383 code but the mose likely is the wire harnesses that goes under the firewall behind the turbo. Next, check the transmission fluid level and condition. without a TECH2 it is hard to diagnose. 2024 GMC AT4 2500 4x4 Blacked Out. Yesterday I started my truck and the check engine light came on. api shift select rex my perspectives grade 9 volume 1 pdf Some technicians may find one or more of the following DTCs set in the Engine Control Module (ECM): P0087: Fuel Rail Low Pressure. Filters on the dispenser is down to 2 micron (overkill) and no water. Sold 16 Crewcab Duramax Allterrain 2022 5. Any time an OBD-II fault code registers with the ECM, such as the P003A code, discovering the cause of the code and determining what repairs are necessary can take time - up to several hours. Follow-Up - My dealer simply reset the code on my car last October. After a couple of days of waiting for a new Sensor they replaced it. Congratulations on your new truck. Duramax Diagnostic Trouble Codes. Hi, I have a P1089 code on a Sierra 2500 AT4 2024, duramax, my dealer can't find the problem. This parts restriction will assist Engineering with product feedback. Did a fuel injector bypass test, all injectors performed as new / …. Then they put a nice locking connector on there so it is even more fun to remove. For this purpose, you can use a fuel pressure gauge. Can anyone tell me the locations or send me a …. The Duramax p0087 code indicates a fuel rail pressure issue. 01 Silverado crew cab long bed 4x4 4:10 Duramax no mods bone stock chevy dealer replaced inj pump and 8 injectors @ 145,000 miles no charge current mileage. 26 HP Coupon verified today for HP laptops, printers, HP Instant Ink, desktops, and more. A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. I have replaced both of the fuel pressure sensors, one on the fuel pump at the back of the the engine, and the one on the fuel OBD P0089. The ECM commands reduced engine power. The CAC temperature sensor 2 signal is warmer than 300°C (572°F) for greater than 5 s. Today my check engine light came on and the code is P1089. Traded:05 lly ccsb 205k miles, built trans and supporting mods. macy's polo shirt Here are the steps a qualified mechanic would typically take to diagnose the issue: Scan the ECM for codes: The first step is to connect a diagnostic scanner to the vehicle’s OBD-II …. I purchased a brand new 2019 2500HD Duramax and at 1200 miles I noticed the engine surging during decel. If you do a search you will find that some (myself included) removed, striped and reshimed the valve. return visits and gm tech finds a bad injector causing the vibration. The DTCs may include the following codes related to injector timing being retarded or advanced: P01CB, P01CC, P01CD, P01CE, P01CF, P01D0, P01D1, P01D2, P01D3, P01D4, P01D5, P01D6, P01D7, P01D8, P01D9. To diagnose the U0101 Chevrolet code, it typically requires 1. craigslist austin for free 2018 GMC l5p ccsb stone blue metallic. 3) Pressurize the intake (post turbo) to 30 psi to verify you don't have any leaks. Visually inspect the wiring harness and connectors related to the fault code. It has happened twice in the last few months, and I have been able to clear the code by cleaning the sensor. Replaced the fuse and now I have been dealing with P0088 (high fuel rail pressure). I was driving yesterday and check engine light came on. The issue with this particular… The post Tips in fixing Fuel Pump Code P1089 for Nissan Patrol ZD30CRD. In the event the battery is disconnected from the unit (the result of failure or re. At ~100 feet it went into neutral with these two codes present. Filling up the thermostat with coolant might solve the problem temporarily. accident on 894 today The interesting thing is that it only comes back on cold starts when it takes a little extra power to start the truck after it's been sitting overnight. 6LV-8 Duramax Turbo Diesel (L5P) Sierra 1500 2020 2021 3. P0101 means you likely need to clean your MAF sensor. How does the FACTORY AIR FILTER actually get soot on it from the inside (towards the engine)? We take a factory L5P Duramax and lay out what happens when you. I have a new 2019 Silverado 3500 Duramax with 1300 miles. Fuel pressure at lift pump was high so got spring changed out from fass, still throwing code. I've been dealing with P0191-00 code on my 2015 2500 duramax. Lost communication w/ central gateway module Next morning traction control light came on and to service: - traction control & ESC. pill ku 118 There are some B31XX codes but not B3100. This bulletin, numbered 23-NA-193 and dated November 2023, is aimed at addressing specific diagnostic trouble codes (DTCs) that have been identified in these models. It does not make the check engine light come on but I was told we should fix it before putting new injectors in it. It's important to thoroughly diagnose and …. 2004 Chevy Silverado 2500HD 2WD 6. If the ECM detects a problem, such as an unexpected increase or decrease in fuel pressure, or excessive or insufficient fuel pressure, that is, higher or lower than commanded, it will set diagnostic trouble code (DTC), DTC P0089 – “Fuel Pressure …. Hey I have a 2011 duramax and I'm getting the po341 code cam signal problem. ford escape auto start stop shift to p restart engine Love the truck! Today i was nearing the end of my trip and my first engine light came on, I plugged in my OBD scanner and pulled up a P1089 code, the description said "Please refer to vehicle service manual!". Sep 4, 2018 · P228B | Chevy and GMC Duramax Diesel Forum. What’s up guys, I bought a 2017 GMC 3500hd dually about 4 months ago. I had a shop claim they ran over every wire a week before this started happening. On the way home with no wind the current mpg was pretty steady around 18. While these engines are still relatively new, they seem to be extremely reliable so far with very few “common” problems that haven’t been solved or addressed. Show Printable Version; 07-20-2012, 02:46 PM #1. Was able to get it into the dealer to have the code checked last night and was told it was a P1089 for fuel pressure not dropping on decel as it should. PCWorld’s coupon section is created with close supervision. Repair all damaged wiring and connectors before moving on to the next step. In the night time videos, I removed the fass system just too see if maybe that was my problem. Sometimes a fault or defect in the control module of the tank triggers the P21DD. 5 LB7 Duramax Powertrain P0089 code on 03 lb7. I have my own diesel tank on the farm, fuel is always fresh, always add Optilube before tank refilling. costco gas price today fountain valley What Does the P1089 GMC Code Mean? The Engine Control Module ( ECM) monitors for changes in fuel rail pressure when the vehicle is in a deceleration condition and the fuel injected quantity is at zero. This means the misfire code P0300 represents the same failure on a GM/GMC Duramax, Ford Powerstroke, or Dodge Cummins. Note-- #4 cylinder is the second one on the driver side-- Cylinders are numbered - Passenger side -1-3-5-7, and driver side 2-4-6-8. Could be restricted fuel lines- [check at the driver's side of the Allsion. We use cookies to give you the best possible experience on our website. p0402 P049C P054E P1089 P140C P149A P2203 P22A1 P23AF P242B P. Drove great but the battery light came on and the DIC reads "Batteries not charging" Edge displays code P0621 "Generator L-Terminal circuit". Fuel rail pressure sensor issue. I have a CTS Edge Insight, so was able to pull the code. 6 and wanted to know if anyone has came across this OBD2 code P133C ?Â. 2017 Duramax with 100,123 miles. There was no response from the controller. Please include the following information if leaving a message: Technician name. 0LTurbo Diesel (LM2) Bulletin No. P0089 and P0090 FOUND IT!! The connector to the fuel rail regulator had a wire pushed out!!! The way it works is the computer LOWERS the fuel pressure. The Generic fault code P0089 is anyone able to help out with this code. I've randomly gotten a P16A8 check engine light on my truck about three times now. I just also replaced the def pump again for the second time with 180k miles. 5-10 LMM Duramax Powertrain p1448 code popped up. Read the article to know possible causes, symptoms, and descriptions. But a bad regulator can do this as well. 171 catawba avenue athens ga The mechanic will use the OBD-II scanner to retrieve the freeze frame data to find out what the condition of the vehicle was when trouble code P0191 was set by the power control module (PCM). GitHub has taken down a repository that contained proprietary Twitter source code after the social network filed a DCMA takedown request. All you need is a simple translation method and a little money. No issue under power when the motor rocks away from the firewall but let off the throttle and that. 2011 Chevy LML, LT, 4X4, Z-71, Ext. how to let others know my notifications are silenced You can try a rebuild, but not all potential leak areas are serviceable. Here's what the IRS Where's My Refund reference codes mean when checking WMR online, or calling the IRS, or using the Refund Status tool. #Repairing a P0700 Duramax Code. Have a 04 LLY Duramax that I cannot get too start up. Troubleshooting P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208 on a Duramax L5P. Hi all , first post here so hope someone can help. Still coding but only after a long deceleration period. I own a 2012 Silverado 2500HD Crew Cab with the 6. 2015 Chevy 3500HD LTZ CCLB 4x4. First time it happened was in my driveway a few weeks back. Please consider creating a new thread. just got everything back together on my LB7 brand new FPR. How do you troubleshoot a P0087 (reduced fuel rail pressure) code? It can be difficult to pin down the cause when it only happens at certain times. To diagnose the P16A8 GMC code, it typically requires 1. Follow Forum Create Thread P1089 on L5P. 6LV-8 Duramax Turbo Diesel (L5P) — Sierra 1500 2020 2021 3. Appointment with dealership set for Tuesday. P0094 or P1094 show a slight difference but enough to throw a code. After you tell the iDash to read the code, you have to scroll down to see it, unless the iDash said "no codes". To diagnose the P1089 code, it typically requires 1. 5-10 LMM Duramax Powertrain glow plug code issue had a bad glow plug on#4 changed the plug reset code parked the truck outside 6hr later started engine check engine light came back withPO674 plug checks ok I have deleted 5 or 6 times & check engine light keeps …. 2017-19 GM T-K2 Platform Powertrain P1089 & Fuel Pump Runs 10 seconds on ignition start Good day all… Traveling through New Mexico and in teens-30’s, going up & down hills got P1089. Picked up the 2024 on 5/12/23 two days later 5/14/23 and less than 90 miles on the new truck check engine light came on. For example, you can’t even call your next door neighbor’s landline without using an area code, and you certainly can’t call mo. The cost to diagnose the P1089 GMC code is 1. 6 L5P Duramax Engine Misfire Diagnosis Models Brand: Model: Model Years: VIN: Engine: Transmissions: from to Chevrolet Silverado 2017 - 2018 All All 6. peligro911 said: This is why i love the internet !. keep tinkering trigger issues I can clear them with my EFI Live autocal but they keep coming back. Thanks for watching!🔔 Subscribe & Ring Bell: https://www. The only code it has ever thrown when this happens is P0336 which is Crankshaft Position Sensor Circuit Range/Performance. Code P0207 and P2146 truck not running help. Got the code P1089 on my ‘19 2500. P2C7A: Nitrogen Oxides Catalytic Converter 2 Efficiency Below Threshold. To diagnose the P1089 GMC code, it typically requires 1. I then cleaned the K&N Air filter, …. If yours is a LB7, the terminal fix is to install an LLY harness. View Profile View Forum Posts Member Join Date May 2012 Location Illinois, US You should have had the code read out and you would have saved the money you spent on the MAS.