P0420 code chevy trax

2014 Chevy Malibu LS P0420. When taking my car to be inspected my battery and check engine light came on. They told me my alternator and O2 sensors had to be replaced. After picking my car up I drove 13 miles and the light came back on. I found out my Cat needed to be replaced. After this was done they told me to drive 60 miles and then come ...

Mar 21, 2024 · If you experience a P0420 code in your Chevy, it is often due to an exhaust leak before the catalyst. It can also be caused by a faulty downstream oxygen sensor (rear) or a faulty catalytic converter. The check engine light can be a source of anxiety for many drivers. One common culprit for this warning is the P0420 code, signaling issues with the catalyst system's efficiency. In this blog post, we'll delve into the P0420 code, explore what it means, and discuss its significance for various car makes, including Honda, Ford, Chevy, and Nissan.=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈=====Engine Code P0420 Saving Repair Parts:C...Chevrolet Cruze 2011 2016 Sonic 2012 2019 Trax 2013 2019 Volt 2012 2015 Involved Region or Country North America Condition Some customers may comment that the MIL is illuminated. Some technicians may find DTC P0171 (Fuel Trim System Lean) or other airflow related codes set in the Engine Control Module (ECM). CauseSeguro de Auto Barato: https://www.youtube.com/watch?v=jha7mvd7mtA0:12 Qué significa el código P0420 en Chevy0:53 Síntomas de code P0420 en Chevrolet1:03 Cóm...

P0420 Engine Controls and Fuel Catalyst low efficiency. If it was one of the HO² sensors it would have set a specific code for that …It was showing the three codes and since I had to go to work the next day, there was enough time for a fourth code to show up as well. P0036, P0138, P0140 and P0041. (Listed below are the basic causes with the common thread in italics.)May 19, 2021 · Diagnostic trouble code(DTC) P0420 stands for “P0420 Catalyst System Efficiency Below Threshold (Bank 1).”. It indicates that the exhaust system’s oxygen levels are below the required threshold in Bank 1, which can damage the engine’s exhaust and fuel system. Bank 1 refers to the side of the engine that houses the number one cylinder. A week ago the engine light came on in my 2011 6spd Eco Cruze. I stopped at an AutoZone and they read the code P0420. I took it to my mechanic and they confirmed my fear. Needed a new catalytic converter. Got the work done and got it back. After about 25 miles of driving light came back on. I dropped it off with my mechanic again.LPT. 77 posts · Joined 2021. #2 · Jul 3, 2023. I am not a certified mechanic I do have a low-cost Trax manual (pdf) purchased on eBay. A quick search for P0299 results in the items below (1 to 3) DTC P0299. (1) Engine Underboost. (2)The ECM detects that the actual boost pressure is less than the desired boost pressure for greater than 2.5 s.LPT. 77 posts · Joined 2021. #2 · Jul 3, 2023. I am not a certified mechanic I do have a low-cost Trax manual (pdf) purchased on eBay. A quick search for P0299 results in the items below (1 to 3) DTC P0299. (1) Engine Underboost. (2)The ECM detects that the actual boost pressure is less than the desired boost pressure for greater than 2.5 s.Refer to your vehicle's service manual to locate and inspect the IAC valve for any signs of damage or malfunction. Clean or replace the valve if needed. 3. Check the throttle body: The throttle body can also be the cause of a P0507 code. Inspect the throttle body for any signs of damage or buildup of dirt and debris.

Jun 20, 2022 · Code P0420 Chevrolet Description. A 3-way catalyst controls emissions of hydrocarbons, Carbon Monoxide (CO), and Nitrogen Oxide (NOx). The catalyst within the converter promotes a chemical reaction, which oxidizes the hydrocarbons and the CO that are present in the exhaust gas. This process converts the hydrocarbons and the CO into water vapor ... 2015 Chevy Sonic RS 1.4L Turbo 6 speed with 79,000 miles. Car looked to be pretty stock mechanically, Only aftermarket that I could see on it was what looks to be a K&N Typhoon CAI. ... What triggers the PCM to set a P0420 code is a measurement of the oxygen capacity of the grid in the cat. The grid is also the expensive part, which aftermarket ...Diagnostic trouble code (DTC) P0420 stands for “P0420 Catalyst System Efficiency Below Threshold (Bank 1).” It indicates that the exhaust system’s oxygen …The p0420 code refers to a fault in the catalytic converter's efficiency, which is an essential component in reducing harmful emissions from the exhaust system. When the converter fails to perform at its optimal level, the engine control module (ECM) detects the anomaly and triggers the p0420 code in the vehicle's On-Board Diagnostic (OBD ...What Does Code P0171 Mean? OBD II fault code P0171 is a generic code that is most commonly defined as "System Too Lean- Bank 1", and is set on gasoline engines when the PCM (Powertrain Control Module) detects that the air/fuel mixture is too lean. In this context, "lean" refers to a condition where there is too much air relative to fuel ...

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P1000 - P1099 (Fuel and air metering and auxiliary emission control) P1011. Intake camshaft position (CMP) actuator, bank 1 -incorrect park position. Engine oil level/pressure, mechanical fault. P1012. Exhaust camshaft position (CMP) actuator, bank 1-incorrect park position. Engine oil level/pressure, mechanical fault. P1013.The code P0420 on your 2016 Chevrolet Sonic LT indicates that the catalytic converter is not working properly. However, the fact that the converter is only a few months old makes it less likely to be the culprit. ... I have a 2016 Chevy Trax LT with over 120,000 miles on it. I have a P0420 code showing but nothing else.Even slight variations in the air/fuel mixture will cause the converter temperature to rise significantly. The “Catalytic Converter Efficiency” Diagnostic Trouble Codes (DTCs) P0420 and P0430, are among the top 10 DTCs technicians face. And while the description might imply a failed converter, odds are the ultimate fault lies somewhere else.The dead cat codes, P0420 and P0430 no longer registered. The engine ran very well, idled smoothly and could rev to 6k rpm. But the random misfire code, P0300 remained. In fact, it appeared much more often and continued to flash much longer.

Looking for Chevy Trax years to avoid: According to CarComplaints, the 2016 Trax is the worst model year of Chevy's subcompact crossover. ... P0420 Code: What It Is and How to Fix It. Renee Martin; 14 minutes; How to Fix a P0171 Code: Cost, Causes, and Symptoms.Search the site with "P0420" in the search field and you will see that our trucks occasionally like to burn up the cats. This code has nothing to do with a loose gas cap, which would result in EVAP leak codes P0440, P0442, P0455, P0456 or P0457. Furthermore, on a 2004 SLT like the OP has, he would've received a "TIGHTEN GAS CAP" message on the DIC.The P0420 code signals a low catalyst system efficiency. This code suggests that the oxygen levels are below the desired threshold (Bank 1), which most often results from problems with your car's exhaust or fuel systems. It can sometimes be tricky to diagnose. The catalytic converter is a component of the vehicle's exhaust system.To further clarify, from my own experience with p0420, the "catalyst efficiency" can be made to increase and exceed the threshold by which the p0420 code is set by correcting the engine issues. When monitoring my engine using Torque Pro ($5.00) and an OBD2 bluetooth adaptor ($35.00), I can track the pid "catalyst efficiency" in the "test ...P0420 Catalyst System Low Efficiency. Similar to P24A0 Diagnosis. This code commonly sets due to a Hydrocarbon Injector failure. Check EGT sensors first, see P24A0. 1) Perform the regeneration and note the exhaust temperature sensor #2 to be over 1000 degrees with temperature sensor #1 more than 600 degrees.Pending P0420 code which means possibly something wrong with the cat. Car is Honda with K20 engine with ~303000 km now. Never changed the O2 sensors. As far as I know, there are 2 sensors B1S1 and B1S2. I cannot read the B1S1 voltage, but I can see B1S2 through Torque. 1.The P0324 code stands for "Knock Control System Error," which means the powertrain control module (PCM) didn't receive the right response from the knock sensor. Some of the common causes of the P0324 code include a bad knock sensor, faulty PCM, and damaged or loose knock sensor wires or connectors. An illuminated check engine light ...I received this code and was told that it was the ECT sensor. There are 2 of these sensors on my 2014 Lt. I have changed the upper one but not the one on the radiator . The CEL is still on. My question is are the 2 sensors the same part? The part I installed was from Advanced Auto, BWD WT5239.Jan 12, 2022 · The other canister down the line is just a resonator. P0420 is usually a bad flex pipe. Make sure they welded the new one properly all the way around on both sides. Any leaks will cause P0420 again. Flex pipe needs a full weld all the way around. Most garage cheap out and don't pull the pipe off to do a good job.

Engine Misfire Codes; Each of these codes are very well likely indicators of what caused the 420/421 code to come on. It’s important to note that any combination of codes with the 420/421 code should be checked first as they are likely causing it. Where things can get really tricky, however, is when just the 420/421 code arrives by itself.

2009 Chevy Traverse P0420 code. My traverse started with codes for the CO2 sensor. Choking while driving, shut off twice, and a growling type of noise behind the dash. Replaced the O2 sensor and got the P0420 for catalytic converter. Turns out the O2 was unnecessary and s was the catalytic converter. Should've checked the oil first because I ...Chevy / GMC Duramax 11-16 LML Forums. 11-16 LML Duramax Powertrain. 2014 lml p0420 code. Jump to Latest Follow ... Only have a p0420 perm code and three more readiness parameters. 2014 silverado crew cab 2500 w/t Manual transfercase Rollup windows Stock configuration. Save Share. Like.In today's video we take a look at a 2014 Chevrolet Cruze with a 1.4l 4 cylinder turbo engine. The vehicle has a check engine light illuminated and has codes...Chevy Camaro P0420 Code Symptoms. The P0420 code in a Chevy Camaro will often be thrown if one of your car's oxygen sensors is not functioning correctly. There are rarely drivability issues associated with P0420. For most people, the first sign that anything is wrong is the service engine soon light coming on.P0140 P0138 Code Chevy Truck, If you have a P0140 or a P0138 code in your chevy truck this video is for you. I will be showing you a few things you should ch...P0164 O2 Sensor Circuit High Voltage (Bank 2 Sensor 3) P0165 O2 Sensor Circuit Slow Response (Bank 2 Sensor 3) P0166 O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 3) P0167 O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 3) P0168 Engine Fuel Temperature Too High. P0169 Incorrect Fuel Composition.Converter catalytic cruze approved chevrolet carb epa exhaust chevy buyautoparts rear. Catalytic converter fits: 2011-2014 chevrolet cruze 1.8l l4 flex dohcCatalytic cruze chevrolet converter partsgeek walker Code p0420 catalytic converter 2013 chevy cruze lt 1.4lCatalytic converter cruze.If the SPS Warranty Claim Code was not recorded on the Job Card, the code can be retrieved in the SPS system as follows: Open TIS on the computer used to program the vehicle. Select and start SPS. Select Settings. Select the Warranty Claim Code tab. The VIN, Warranty Claim Code and Date/Time will be listed on a roster of recent programming events.

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Chevrolet — Cruze (Gen II - VIN B) 2016 2019 1.4L (RPO LE2) Equinox 2018 2020 1.5L (RPO LYX) Malibu 2016 2020 1.5L (RPO LFV) Trax 2019 2019 1.4L (RPO LE2) Volt 2016 2019 1.5L (RPO L3A) GMC Terrain 2018 2020 1.5L (RPO LYX) Involved Region or Country North America, China, Thailand, Middle East, Israel, Europe, Brazil, Chile, Colombia, Peru ...Chevrolet Sonic 2012-2019 Chevrolet Trax 2013-2019 Chevrolet Factory Service Bulletin OBDII Code P0299. ⚠ Check if your Chevrolet have Safety Recalls. Description. The Engine Control Module ... P0299 Chevrolet Code - Engine Underboost. How to Fix. Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and ...Dec 5, 2023 · See also Troubleshooting Honda P0740 Code: A Comprehensive Guide for Diagnosis and Repair I have a 2016 Chevy Trax LT with over 120,000 miles on it. I have a P0420 code showing but nothing else. It is idling pretty rough enough to cause the lights to dim at times, lack of power at takeoff … read moreThe most common fix for P0420 in the Chevy HHR is a new catalytic converter, followed by an O2 sensor replacement. Before taking your HHR into an exhaust shop for an (expensive) new catalytic converter, let's ensure that's what you need. Here's a good P0420 diagnostic order for the Chevy HHR: 1. Check for Other Codes.Chevy Camaro P0420 Code Symptoms. The P0420 code in a Chevy Camaro will often be thrown if one of your car's oxygen sensors is not functioning correctly. There are rarely drivability issues associated with P0420. For most people, the first sign that anything is wrong is the service engine soon light coming on.4'th Cylinder. P0304 is a cylinder-specific misfire code, meaning only your Trax's fourth cylinder has a misfire. Before you can even diagnose P0304 in your vehicle, you need to find the fourth cylinder's location. On "V" configuration engines, it'll usually be the second cylinder on the head further away from the front of the engine.Causas del código OBD2 P0420 Genérico. Un código de falla P0420 puede tener uno a más de los siguientes problemas: El combustible utilizado en el vehículo tiene mucha cantidad de plomo. El sensor de oxigeno del catalizador presenta un problema. El Sensor de Temperatura del Motor está presentando fallas. El tubo de escape puede estar fisurado.P0137 is a fairly common OBDII code that occurs in the Chevy Trax, it’s a general code. This means that it has the same meaning for any vehicle. This code is supposed to let you know that there is an issue with the wiring or harness going to the sensor, or the sensor itself is bad. There are other things that cause P0137 to populate.If your Chevy Equinox has the P0420 code, it means that the catalytic converter is not functioning properly. There are a few things that can cause this, but the most common is a problem with the oxygen sensor. If you have this code, take your car to a mechanic and have them check the oxygen sensor.2. Enter the VIN in the parts catalog and go to the fuel injector rail parts section. 3. After the injector part number has been identified on the body of the injector, in the description column. For example, part number 12668390 highlighted in the table. To the left is the part number that will need to be order. ….

NOTE: Take note that while the cods listed below are not strictly related to P0420 – “ Catalyst System Efficiency Below Threshold (Bank 1)”, these codes often appear with P0420. P0421 – “Warm Up Catalyst Efficiency Below Threshold (Bank 1)”. P0422 – “Main Catalyst Efficiency Below Threshold (Bank 1)”. P0423 – “Heated ...In your case, the P0420 code stands for “Catalyst System Efficiency Below Threshold (Bank 1).”. When you receive aP0420 code it means your catalytic converter is not operating at maximum efficiency. Usually this means your catalytic converter needs to be replaced or there is a problem with your O2 (oxygen) sensors.Labor: 1.0. To diagnose the U0100 Chevrolet code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.The dealer probably cheaped out and installed a universal cat, or a low-budget aftermarket cat. What triggers the PCM to set a P0420 code is a measurement of the oxygen capacity of the grid in the cat. The grid is also the expensive part, which aftermarket manufacturers commonly skimp on. It's not uncommon after installing a cheap aftermarket ...Apr 1, 2022 · P0106 Definition: MAP Sensor - Range/Performance P0106 is a generic OBD2 code, which means that it has the same definition for the Chevy Trax as it would any other vehicle. Here's the definition of P0106, provided with the understanding it can help make diagnosing it a little bit easier. MAP Sensor The MAP (Manifold Absolute 1 post · Joined 2022. #1 · Mar 8, 2022. So about 2 years ago I got my 2012 1.4t cruze from my sister. She was trying to sell it but it had the P0420 code and took way to much off the price so she went to a shop and had it looked and and they said it was a bad down pip right after the turbo and cost her 900$ and it worked for awhile.About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...I just hit 75k miles on my 2015 LML and just received a P0420 code. Code “P0420” - Catalyst System Efficiency below Threshold Bank 1. ... Chevy and GMC Duramax Diesel Forum. 3.8M posts 208.2K members Since 2005 A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. Come join the discussion …P0420 Code. For the last few months (since around October) I have been occasionally getting the P0420 CEL code. I currently have 104,000 miles on the odometer. The only service I've done to the vehicle is replacing the water outlet, the return line from the outlet to the coolant overflow tank, and replaced the entire coolant overflow tank.Engine Code P0171. Ok I have a 2015 Chevy Trax with 82,000 on it. For the last 2 weeks I keep getting this code and cant find the source of it. It can not be the MAF, Dirty Air filter, Upstream and Downstream o2 sensors, or even the spark plugs and coil pack. They have all been replaced. I also had a crack in the exhaust system that was repaired. P0420 code chevy trax, 11 Mar 2021 ... HOW TO FIX CODE P0496 CHEVY, GM 1.4L TURBO 2011-2016 CHEVROLET CRUZE CANISTER PURGE VALVE FIXED! Hey guys in this video we show you how easy ..., 48K views 3 years ago. ...more. There is a lot of advice on this issue but in my case it appears to be a cracked flex pipe. Hoping this helps others diagnose their issue before spending too..., Blasirl. 15863 posts · Joined 2015. #11 · Oct 17, 2019. A code P0420 may mean that one or more of the following has happened: Leaded fuel was used where unleaded was called for (unlikely) A damaged or failed oxygen / O2 sensor. Downstream oxygen sensor (HO2S) wiring damaged or connected improperly., Chevrolet Trax 2013-2019 Chevrolet Factory Service Bulletin OBDII Code P0299. ... To diagnose the P0299 Chevrolet code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is …, Spacers worked on 2 cars (01 Prius, 00 V70XC) I've tried it on with P0420 code so thats a good bet for you. Basically it pulls the downsteam O2 sensor out of the exhaust flow and makes the ECU think CAT is functioning at good efficiency. I got perfect fit O2 extender for the 00 V70XC from ebay for like $6., A popular car modification is the stereo system. Replacing the stereo enables the car owner to add an aftermarket stereo with a number of features such as MP3 players, Bluetooth co..., I keep getting a check engine light code for P0420 Catalyst System Efficiency Below Threshold (Bank 1) on a 2016 Chevy Trax. I change both O2 sensors out and even the Catalytic convert. I went with Certified GM parts to replace the bad parts with. ... I have the same P0420 code at about 115K miles on my 2015 TRAX. I am the original owner and ..., This is a 2015 Chevrolet Trax with 1.4 Turbo engine. P0171 and P1101 sorry on video I said P1107 that was wrong. I put the smoke tester and the breather on t..., Chevy Captiva P0420 Code Symptoms. The P0420 code in a Chevy Captiva will often be thrown if one of your vehicle’s oxygen sensors is not functioning correctly. There are rarely drivability issues associated with P0420. For most people, the first sign that anything is wrong is the service engine soon light coming on., Code P0420 Chevrolet Description. A 3-way catalyst controls emissions of hydrocarbons, Carbon Monoxide (CO), and Nitrogen Oxide (NOx). The catalyst within the converter promotes a chemical reaction, which oxidizes the hydrocarbons and the CO that are present in the exhaust gas. This process converts the hydrocarbons and the CO into water vapor ..., Your orange check engine light is on and the car is sending out the P0420 code. This code means your catalytic converter is not operating properly. This coul..., Discuss, ask questions, and post pics and videos related to the Chevy Trax. Buick Encore and Envista also welcome! ... 2015 Trax P0420 . I'm at the end of my rope with this code. We've replaced both catalytic converters, the flex pipe, both O2 sensors, and the valve cover gasket and I STILL get a P0420 code that won't go away. ..., Looking for Chevy Trax years to avoid: According to CarComplaints, the 2016 Trax is the worst model year of Chevy's subcompact crossover. ... P0420 Code: What It Is and How to Fix It. Renee Martin; 14 minutes; How to Fix a P0171 Code: Cost, Causes, and Symptoms., A code P0420 may mean that one or more of the following has happened: Leaded fuel was used where unleaded was called for (unlikely) A damaged or failed oxygen / O2 sensor. Downstream oxygen sensor (HO2S) wiring damaged or connected improperly. The engine coolant temperature sensor is not working properly. Damaged or leaking exhaust manifold ..., Diagnostic trouble code (DTC) P0599 stands for “Thermostat Heater Control Circuit High.”. This code is triggered when the powertrain control module (PCM) detects an incorrect signal from the thermostat. The P0599 code is caused by wiring or connector problems, thermostat failure, coolant leaks, or PCM failure., FIX CODE P0441 P0442 ENGINE LIGHT ON CHEVY, CHEVROLET, GMC, BUICK, CADILLAC Great Car Scanner: https://amzn.to/2QmNBri Check out our Amazon Store for the t..., Use Code: APRILDEAL. Menu. 20% off orders over $100* + Free Ground Shipping** Eligible Ship-To-Home Items Only. Use Code: APRILDEAL ... 2016 Chevrolet Trax Vehicle ..., P0420 code on a 2016 5.3. Greetings everyone, Jesse here and new to the group! I have a 2016 5.3 crew cab LTZ Z71, K&N intake with synthetic dry filter, dual Flowmaster 44s with an X-pipe, Diablo 93 tune, JET MAF sensor, JET throttle body, and MSD wires. Nothing too crazy and zero issues until I just hit 50,000 recently and I got a CEL that ..., $7E8 & $7E9 aren't engine codes. $7 represents mode 7 - diagnostic code request. E8 (or E9) means that you request fault codes from module E8 (or E9) ... P0420, P0430: Bad catalytic converter: P0706: Transmission range sensor circuit range/performance: ... $7E8 and $7EA Engine Chevrolet Silverado 2014 Truck. Reply. Tim Miller. October 16, 2021 ..., P0420 After Cat Replaced. TECH-ASSIST01/03/2018 | 07:28:10. The customer returned after the catalytic converter was replaced and the P0420 reset. The …, A somewhat common issue with the Chevy Trax is the P0449 code. This code references a number that is given to you when you plug it into a OBD2 scanner. P0449 deals with the evaporative emissions control (EVAP) system. It often appears with, or is related other codes, such as P0420, P0446, and very often P0455. P0449 is …, Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST. 1 (855) 347-2779 · [email protected]. GET A QUOTE. P0597 code definition The P0597 trouble code signifies that a thermostat heater control circuit is open. What the P0597 code means If a PCM (Powertrain Control Module ..., 2015 Chevy Trax is throwing a P0420 code for check engine lights. I took it to the dealership and they want $1,800 to replace the catalytic converter. ($1,600 for the converter, $100 for gaskets & clamps, $100 for labor) What are my options here? I feel like that is way too expensive for a converter., =====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈== How to Fix CHEVROLET P0420 ==Engine Code CHEVROLET P0420 Savin..., A Chevy Cruze P0299 code happens when the onboard computer (ECM) sees low pressure in the manifold. It is an underboost code the ECM sends out when it detects an underboost condition exists. The boost is the amount of positive pressure that is being created by the turbocharger. When the pressure is low, an underboost condition will exist, which ..., P0420 silverado. P0420 chevy silverado obdii code diagnosis and explanationP0420 code: i have the check engine, vsc, and trac off lights on Part 2 -how to test trouble code p0420 (gm 3.8l)Code p0420: hi , today while i am driving check engine appeared. i..... P0420 Code: I Have the Check Engine, VSC, and Trac Off Lights on. …, Diagnostic trouble code(DTC) P0420 stands for “P0420 Catalyst System Efficiency Below Threshold (Bank 1).”. It indicates that the exhaust system’s oxygen levels are below the required threshold in Bank 1, which can damage the engine’s exhaust and fuel system. Bank 1 refers to the side of the engine that houses the number one cylinder., FIX CODE P0420 ON CHEVROLET CRUZE, CHEVY SONIC Catalyst System Efficiency Below ThresholdIf you have engine light on and code such as P0420 we will explain ..., P0137 is a fairly common OBDII code that occurs in the Chevy Trax, it's a general code. This means that it has the same meaning for any vehicle. This code is supposed to let you know that there is an issue with the wiring or harness going to the sensor, or the sensor itself is bad. There are other things that cause P0137 to populate., Chevrolet vehicles are known for their performance, reliability, and advanced technology. However, like any other vehicle, Chevys can experience mechanical issues from time to time..., After taking it to a mechanic, I was told the Accelerator Pedal Sensor is bad, so it was as suggested that I go to Chevy to update the software. The car has 82,000 miles, sadly. I haven't had it a full 2 Years. The Codes that come up are as follows, 1st. P2138 - APP sensor-Accelerator Pedal position Sensor 2nd. & P0420 - Catalytic Converter, Chevy. Chevrolet cars can encounter the P0420 code due to similar reasons as other manufacturers. Regular inspections and timely replacements of catalytic converters and oxygen sensors can keep your Chevy running smoothly. Nissan. Nissan vehicles may exhibit the P0420 code due to catalyst inefficiency., HI, While the common thinking on this code is the rear converter, which in most cases is true, in this case, it is the Bank 1 converter that bolts to the exhaust manifold. Check for any exhaust leaks and repair. If ok, then you will need to replace the converter that bolts to the right side exhaust manifold (the one facing the rear of the ...