P0420 chevrolet equinox - There are many potential causes of code P0014. Some are easy to check and correct yourself, such as old engine oil, or not having enough oil in the engine. Other causes are more complicated, such as malfunctioning components in the variable valve timing system itself. Engine oil is dirty. Engine oil is too low. Engine oil is incorrect viscosity.

 
 A: The P0420 code on a Chevy Equinox corresponds to a malfunction in the catalytic converter. It indicates that the catalytic converter’s efficiency is below the recommended threshold. Q: How does the P0420 code affect my Chevy Equinox? A: The P0420 code can lead to a decrease in engine performance and increased emissions. . Cvs craig

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 ...P0300 and p0420 on a 2011 Chevy equinox 2.4L LS. 105000. plugs, coils, crank sensor and both o2s have been replaced and well as exhaust manifold and ECU … read moreThe code P0420 - Catalyst Efficiency Below Threshold (Bank 1) means that there is a problem with the catalytic converter of the Bank 1. The code P0430 means the same fault for the Bank 2 catalytic converter in an engine with two cylinder banks (e.g., V6 or V8). The catalytic converter or "cat" is a key component of the vehicle emission control ...Learn how to troubleshoot and resolve P0420 error code in your Chevrolet Equinox. Our guide will help you tackle catalyst system efficiency issues efficiently and ... 2023 TrailblazerSTARTING AT: $22,100†AS SHOWN: $27,425†. Make a huge impression with the 2024 Chevy Equinox small SUV equipped with a 1.5L turbocharged engine, standard Chevy Safety Assist, and a details-focused interior. Nov 27, 2017 · The code P0420 for your 2.4 L engine is for the after the catalyst O2 sensor. Your vehicle has only two O2 sensors. One is in manifold before the catalyst and the other is after the catalyst. The code can be from a defective sensor or catalytic convertor. The system should have further tests done to make sure the correct part is replaced before ... Code P0420 Description. The Engine Control Module (ECM) uses sensors mounted in front of and behind the Three-Way Catalytic Converter (TWC) to monitor its efficiency. The first sensor, the air-fuel ratio sensor, sends pre-catalyst information to the ECM. The second sensor, the heated oxygen sensor, sends post-catalyst information to …2014 Chevy Equinox won t start r MechanicAdvice 2014 Chevy Equinox 2.4 PO171 PO300 P2097 - Help With Car or CHEVY CRUZE CHECK ENGINE LIGHT P2097 P0420 P0324 DIAGNOSIS - YouTubeCode P0420 Chevrolet Description. A 3-way catalyst controls emissions of hydrocarbons, Carbon Monoxide (CO), and Nitrogen Oxide (NOx). The catalyst within …One of the main issues affecting Chevy Equinox 2.4-liter engines relates to their variable valve timing (VVT) system's camshaft adjustment actuators, which can develop an internal malfunction with ...The bank 1 version of this code is P0420. Chevy Equinox P0430: Symptoms. The P0430 code in a Chevy Equinox will often be thrown if one of your …Apr 19, 2018 · Diagnosing P0420 and P0171. Hey everyone! My very first post! Greetings all. I'll just jump right in, I just bought a 2014 Equinox LT AWD about 6 months ago. My check engine light came on so I decided to get a OBD II device and check what could be wrong. It threw the P0171 (Lean Engine) and P0420 (Catalyst efficiency below threshold) codes both ... Technicians may encounter a concern where the catalytic converter has come apart or has set a P0420 and/or P0430. ... 2013 Equinox 3.6L 121,000 2003 Trailblazer 4.2L 188,000 2010 Traverse 3.6L 193,000. ... A forum community dedicated to Chevy Traverse owners and enthusiasts. Come join the discussion about performance, …GET FIXD. What Does Code P0420 Mean? P0420 definition : Catalyst system efficiency below threshold (Bank 1) Issue Severity: MODERATE – Extended driving with this code can cause internal …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.rednox301 said: Below is a list of common conditions to set a P0420 DTC. This was taken from the 2014 GM Service Manual for the 2.4L. Engine misfire. High engine oil or coolant consumption. Weak or poor spark. Retarded spark timing. Rich or lean fuel mixture. Damaged O2 sensor or wiring harness.Aug 23, 2018 · October 25, 2022 by Jason. P0010 is a relatively common trouble code. It affects vehicles with variable valve timing (VVT). The list of VVT vehicles is growing, and the Chevy Equinox can have VVT and is prone to developing this code. P0010 is often by low or sludgy oil. Check your Equinox’s oil as soon as possible. P0010 is a generic OBDII code. Read the vehicle Owner’s Manual for more important feature limitations and information. 2025 EQUINOX MODELS. ACTIV. Starting at: $33,000†. As Shown: $33,000†. Includes all LT features plus: Unique ACTIV grille and front fascia. Black badging and emblems. Roof rails. Check Engine Light and P0420 and P0430 Codes. So, your Check Engine light is on, and you’ve got either a P0420 or P0430 code, on your OBD-II scanner. This “Catalyst system efficiency below threshold” code is triggered when your car’s computer (the powertrain or engine control module (PCM or ECM)) detects a catalytic converter …About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...P0420 Chevy Silverado. Symptoms Of P0420 Code. The P0420 code is related to the catalytic converter in a vehicle’s exhaust system. This code indicates a problem with the efficiency of the catalytic converter, which is typically caused by a faulty oxygen sensor or a problem with the converter itself. ... 2011 Chevy Equinox Oil: …Jan 12, 2023 · Diagnosing the error code P0420 on a Chevy Equinox (2011)Code P0420 indicates that the catalytic converter is not functioning efficiently, therefore increasi... P0420 Permanent Code is the ECU saying the "second" O2 sensor(s) after your first catalytic converter(s) are not sending the signals the computer expects in relation to the signals the first O2 sensor(s) located in the exhaust manifold, are sending.The Chevrolet Lumina was a value-priced family sedan, but it was outsold by its midsize competition. Learn more about the Chevrolet Lumina. Advertisement The Chevrolet Lumina wasn'...2nd Gen : 2010-2017 Chevy Equinox. 2010-2017 Equinox Maintenance . 2016 Catalytic Converter. Thread starter bmarshall3; Start date May 24, 2023; Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. ... There have been two aftermarket converters insalled but the p0420 code keeps coming …Chevy Equinox P0420: Meaning, Causes, + How to Fix. This page is meant to help you troubleshoot the Chevy Equinox P0420 trouble code. It covers the P0420 code’s meaning, symptoms, causes, and possible solutions. P0420 is the most common OBDII code and is virtually never a breakdown risk.About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...A P0420 code is set when the upstream sensor and the downstream oxygen sensor sense the catalytic converter is not doing its job. Basically, the amount of oxygen going into the converter is not being burned, and it detects it through the downstream sensor. Oxygen is the key here. Modern Engine Management Systems leave a little bit of …The muscle-car era inspires images of powerful, iconic V-8s powering sleek cars down the road with a throaty grumble. However, many classic cars came with inline-six-cylinder engin...2012 Chevrolet Equinox 135,000miles. 2.4L. P0420 Keeps coming back. I have an up to date snap scanner and can read any information needed. I need to troubleshoot to find the problem. I am looking for someone that has done this before. Answered in 6 minutes by: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 ...Jan 12, 2020 · 2014 Chevrolet Equinox. Asked by Visitor in Troy, NY on January 12, 2020. My 2014 Chevrolet Equinox keeps showing P0420 Code My car was brought to dealership for fixing and they charged me 1400.00 for a manifold when I google the code it says catalyst converter and a day after picking up my car the check engine light came back on, did they ... Technicians may encounter a concern where the catalytic converter has come apart or has set a P0420 and/or P0430. ... 2013 Equinox 3.6L 121,000 2003 Trailblazer 4.2L 188,000 2010 Traverse 3.6L 193,000. ... A forum community dedicated to Chevy Traverse owners and enthusiasts. Come join the discussion about performance, …Follow my Builds / Projects: www.youtube.com/c/patrickkasilag?sub_confirmation=1Quick video on how to change bank 1 sensor 1 oxygen sensor on a 2015 chevy eq...P0299 Chevrolet Code - Engine Underboost. - Code Popularity: 99,040 Views. - Repair Importance Level: 3/3. - Repair Difficulty Level: 3/3. Table of contents. Created and updated by William Orellana on Jun 09, 2022. Possible Causes. Tech Notes. Description 📷.The code P0420 for your 2.4 L engine is for the after the catalyst O2 sensor. Your vehicle has only two O2 sensors. One is in manifold before the catalyst and the other is after the catalyst. The code can be from a defective sensor or catalytic convertor. The system should have further tests done to make sure the correct part is replaced before ...Nov 21, 2018 · Fuel System Too Rich. P0172 is thrown when the oxygen sensors detect that the air-fuel mixture is too rich. A rich fuel mixture contains too much fuel in relation to air. The A/F ratio for ideal combustion is 14.7 parts air to 1 part fuel (14.7:1). With that in mind, either too much fuel or not enough air can cause a vehicle to run rich. 2016 Equinox setting a P0172. High Pressure pump leak... Great example of a time that multiple SI resources would have helped determine vehicle problem faster. 2016 Equinox setting a P0172. High ...Code P0420 Description. The Engine Control Module (ECM) uses sensors mounted in front of and behind the Three-Way Catalytic Converter (TWC) to monitor its efficiency. The first sensor, the air-fuel ratio sensor, sends pre-catalyst information to the ECM. The second sensor, the heated oxygen sensor, sends post-catalyst information to the ECM.WHAT CAUSES CODE P0420 ENGINE LIGHT CHEVROLET, CHEVY, GMC, BUICK. Check Details. Top Check Engine Trouble Codes 2010-2017 Chevy Equinox SUV - YouTube. Check Details. Chevy Equinox P0014: Camshaft Position B → Over Advanced → Bank 1. Check Details. 2012 Chevrolet Equinox 135,000miles 2.4L P0420 …Summary. DTC P2097 stands for “Post Catalyst Fuel Trim System Too Rich Bank 1”. This code is triggered when the downstream bank 1 oxygen sensor registers a rich condition. The most common symptoms of a P2097 include a lit check engine light, poor engine performance, and a reduced fuel economy. Contents.Here are some steps to fix a P0420 code Honda Accord. First, remove the O2 sensor and pour 4-6 ounces of seafoam into the opening, replace the sensor, and leave it overnight. Reset the code and then continue driving. Increase the gap between the oxygen sensor and the converter using a spark plug non-fowler.- Expected to Generate $150 Million in Annual Revenues- Share Repurchase Update ProvidedHOUSTON, March 28, 2023 /PRNewswire/ --Group 1 Automotiv... - Expected to Generate $150 Mi...P0420 Chevy Equinox Issue and Solutions to Fix Properly - UNCRD LAC. Check Details. Equinox awd 4dr 2lt utility. Chevy silverado p0405 code: q&a on replacing the valveEquinox p0411 secondary injection causing ajar circled opened slid hood cartalk Chevy equinox p0455 & p0405 codes: q&a on chevrolet dtcsEquinox egr p0404 valve …=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈== How to Fix CHEVROLET P0420 ==Engine Code CHEVROLET P0420 Savin...Jan 12, 2020 · 2014 Chevrolet Equinox. Asked by Visitor in Troy, NY on January 12, 2020. My 2014 Chevrolet Equinox keeps showing P0420 Code My car was brought to dealership for fixing and they charged me 1400.00 for a manifold when I google the code it says catalyst converter and a day after picking up my car the check engine light came back on, did they ... I have what I hope is a quick question. Wife’s 2011 2.4L Equinox is throwing a P0420 code. I was able to monitor the rear O2 sensor signal with my OBD adapter and the Torque app on my phone. Once the car went into closed loop the signal steadied around 0.75 – 0.8. From what I’m reading that’s indicating the converter isn’t pulling its ...Cost to Drive Cost to drive estimates for the 2020 Chevrolet Equinox L 4dr SUV (1.5L 4cyl Turbo 6A) and comparison vehicles are based on 15,000 miles per year (with a mix of 55% city and 45% ...Bill Saporito test-drives the new Chevy SS, a flashback to the time of stick-shift muscle cars. By clicking "TRY IT", I agree to receive newsletters and promotions from Money and i...Jay Safford. Automotive Mechanic. 16 years of experience. The code P0420 can be caused by the catalyst, O2 sensors before and after the catalyst. If both O2 sensors and catalyst was replaced then you may have an exhaust leak at the manifold or pipes. I suggest you have a mechanic like one from YourMechanic do a complete diagnostics of …Q&A. Q: What is the P0420 code on a Chevy Equinox? A: The P0420 code on a Chevy Equinox is a generic powertrain code that indicates a malfunction in the catalytic converter’s efficiency.WHAT CAUSES CODE P0420 ENGINE LIGHT CHEVROLET, CHEVY, GMC, BUICK, CADILLAC Great Car Scanner: https://amzn.to/2QmNBri Check out our Amazon Store for the to...You may ever experience troubleshooting, such as P0420 Chevy equinox. It happens after your car is connected to the scanner. The code appears to indicate there is an issue related to catalyst system efficiency. Based on this result, it seems your issue comes from the catalytic converter. It is capable to scrub pollution, so the emission is free ...Chevy Equinox P0430: Symptoms. The P0430 code in a Chevy Equinox will often be thrown if one of your vehicle’s oxygen sensors is not functioning correctly. There are rarely drivability issues associated with P0430. For most people, the first sign that anything is wrong is the service engine soon light coming on.Here's how to modify your car's oxygen sensor to get rid of a P0420 OBDII code, clear the check engine light and pass an emissions test.The P0420 code is thr...Chevy Equinox. Equinox General Discussion. 08 Equinox Sport P0420 code NIGHTMARE UPDATE with new pictures! Jump to Latest Follow 18K views ... 08 Equinox Sport P0420 code NIGHTMARE WOW.. speachless.. I have seen some exhaust riging over the years.. that one there.. it ranks up there.P0135 is a very common OBDII code that occurs in the Chevy Equinox. It is caused by a failure in one of the oxygen sensors heated elements, specifically bank 1 sensor 1. It technically stands for: P0135: Heated Oxygen Sensor → Sensor Heater Circuit Malfunction → Bank 1, Sensor 1. The purpose of the heated element in the oxygen sensor is to ...P0420, P0430, p1351 on 97 Chevy Silverado 5.7L I have read the article on this topic. I drive a 97 Chevy Silverado, 2WD 5.7L 205k miles. I replaced the coolant temp sensor, and checked O2 sensors. Bank 2(P0430) had a bad sensor. I replaced and all other sensored read within specs. Reset codes and they came back. I find it hard to believe both ca...Aug 5, 2021 · 2020 Chevrolet Equinox vs. 2020 Honda CR-V. The 2020 Honda CR-V is a great compact SUV . It has an energetic powertrain, fantastic mpg estimates, a vast cargo capacity, an upscale cabin, and lower ownership costs than the Equinox. The Chevrolet has a higher predicted reliability score, but outside of that, the Honda is the clear choice. P0013 Chevy Equinox 2012. The P0013 Chevy Equinox 2012 code is a generic powertrain code. This code means that there is a problem with the exhaust valve timing on the engine. The most common cause of this code is a worn or damaged timing chain. The timing chain connects the camshaft to the crankshaft and controls when the valves open …only thing you have to change bank 1 sensor 1 and bank 1 sensor 2,,and then get the ob2 scanner and delete the code and drive about 50 miles per hour about 5...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.P0135 is a very common OBDII code that occurs in the Chevy Equinox. It is caused by a failure in one of the oxygen sensors heated elements, specifically bank 1 sensor 1. It technically stands for: P0135: Heated Oxygen Sensor → Sensor Heater Circuit Malfunction → Bank 1, Sensor 1. The purpose of the heated element in the oxygen sensor is to ...=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈== How to Fix CHEVROLET P0420 ==Engine Code CHEVROLET P0420 Savin...rednox301 said: Below is a list of common conditions to set a P0420 DTC. This was taken from the 2014 GM Service Manual for the 2.4L. Engine misfire. High engine oil or coolant consumption. Weak or poor spark. Retarded spark timing. Rich or lean fuel mixture. Damaged O2 sensor or wiring harness.Multiple codes, diagnosis in different directions, sad ending.3 Answers. Sorted by: 2. P0420 is probably the most common code seen. It refers to "Catalytic Converter Efficiency" Basically, it Engine Control Module (ECU) …P0420 chevy equinox issue and solutions to fix properly Sensor equinox chevy o2 Equinox p0011. P0171, p0131, p0496 chevy sonic, aveo, cruze, spark. P0171 code2011 chevy equinox p0011 and engine tick Equinox chevrolet ltz chevy terrain gmc cylinder car suv file over used cars take v6 under 6l 2006 2010 suvsEquinox p0014 4l.As the code description implies the P0420 code means that the vehicle's control module has detected that the three-way catalytic converter is not working properly (it is not as efficient as the factory is expecting). Replacing the oxygen (O2) sensors may sometimes fix the code, but in most cases, the catalytic convert needs to be replaced to ...How To Diagnose Trouble Code P0420: Catalyst Efficiency Below Threshold (Bank 1). TEST 1: Checking For a Broken Catalytic Converter. TEST 2: Checking The Output Of The Rear Oxygen Sensor. TEST 3: Manually Inducing A Lean Condition. TEST 4: Manually Inducing a Rich Condition.In this video I bring you along as I have a look at a customers Chevy equinox with the classic P0010 Intake cam position solenoid control circuit. It is a ve...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 ...2012 Chevy Equinox 2.4l code P0420. My 2012 Equinox gave me a P0420 code today which is...catalytic system low efficiency (bank 1) So I start looking at catalytic converters on line to buy then I read that it could possibly be the O2 sensor (I'm assuming the downstream one) My Equinox was recently recalled for excessive oil consumption and the ...As the code description implies the P0420 code means that the vehicle's control module has detected that the three-way catalytic converter is not working properly (it is not as efficient as the factory is expecting). Replacing the oxygen (O2) sensors may sometimes fix the code, but in most cases, the catalytic convert needs to be replaced to ...Read the vehicle Owner’s Manual for more important feature limitations and information. 2025 EQUINOX MODELS. ACTIV. Starting at: $33,000†. As Shown: $33,000†. Includes all LT features plus: Unique ACTIV grille and front …The base price of the 2020 Escape is just over $1,000 higher than that of the 2020 Equinox, at $26,080. Ford allows buyers to spec all-wheel drive (for $1,500) on its base model while Chevrolet ...To replace, the intake manifold and the fuel rail will first need to be removed. Unfortunately, the P0420 is a fairly straight forward code, and a fairly common problem. This code points to a failing Catalytic Converter. The Oxygen Sensors measure the amount of emissions in the exhaust going into, and then out of the converter.How to diagnose code P0420 on a Chevrolet Equinox. Typically, you'll find out about P0420 because your malfunction indicator lamp or "check engine light" turned on & you or a mechanic diagnosed the problem with an OBD II code scanner like this one from Bluedriver. You may experience a very slight reduction in engine power from reduced exhaust ...converter: https://amzn.to/39lz3Be P0420 Check engine light how to fix it yourself. This car is a 2009 Chevy Malibu but the code and problem will be the same...

The base price of the 2020 Escape is just over $1,000 higher than that of the 2020 Equinox, at $26,080. Ford allows buyers to spec all-wheel drive (for $1,500) on its base model while Chevrolet .... Montgomery county fair in texas

p0420 chevrolet equinox

I had P0420 in my 2011 I4 Terrain and it turned out the be a bad catalytic converter, not a cheap fix. ... -2015 Chevrolet Equinox SS 301HP V6-2024 Corvette Mid ...13 Jan 2020 ... Repair for common codes P-0010 through P0029. Variable valve timing solenoid cleaning or replacements on Chevy's 2.4L ecotec engine for ...Chevy Mechanic: Dan. This could be the problem. Only other thing that may cause this code is oxygen sensor and it is unlikely. At this point I'd go ahead and replace the rearoxygen sensor since you replaced converter. If that doesn't help then I'd suspect the aftermarket converter is the problem. Converter should be covered 10 years-100k miles ...Bill Saporito test-drives the new Chevy SS, a flashback to the time of stick-shift muscle cars. By clicking "TRY IT", I agree to receive newsletters and promotions from Money and i...P0420 - 2010 Chevy Equinox LTZ 6CY - O2 BANK LOCATIONS. I am getting a P0420 - Catalyst System Efficiency Below Threshold (Bank 1). The 2010 6CY has two converters that come off the engine. One on the back of the engine towards the rear of the car and one on the front of the engine that comes off the front of the car.Usually, when you have a code P0420, the check engine light will come on, and your vehicle may remain completely drivable. However, these symptoms may also appear: Loss of power, even after warming your vehicle up. Slow acceleration or inability to increase speed over 30-40mph. Sulfurous smell from the exhaust pipe.GET FIXD. What Does Code P0420 Mean? P0420 definition : Catalyst system efficiency below threshold (Bank 1) Issue Severity: MODERATE – Extended driving with this code can cause internal …Equinox p0420 properly lighter smarter Equinox carbuzz Captiva p0011 p0010. Chevy equinox camshaft p0011 actuator intake 4l replacement ecotech dtc fixed. Equinox p0014 4lChevrolet equinox questions Need help2011 chevy equinox p0011 and engine tick. P0420 chevy equinox issue and solutions to fix properlyUsed chevrolet …B. BigCountry24 Discussion starter. 2 posts · Joined 2024. #1 · Jan 12, 2024. Equinox started throwing a P0299 underboost fault, and goes into limp mode and wont get out of its own way. Clear the fault and boost comes back and runs fine temporarily, then resets the same P0299. Drove it with my scanner on it and for some reason its not …Here's how to modify your car's oxygen sensor to get rid of a P0420 OBDII code, clear the check engine light and pass an emissions test.The P0420 code is thr...2011 Equinox 2.4L is throwing code P0420 repeatedly. Runs fine and no other codes. New o2 sensors. Has 185,000 miles on it and now on engine #3 so its time to replace. Those …To replace, the intake manifold and the fuel rail will first need to be removed. Unfortunately, the P0420 is a fairly straight forward code, and a fairly common problem. This code points to a failing Catalytic Converter. The Oxygen Sensors measure the amount of emissions in the exhaust going into, and then out of the converter.13 Jan 2018 ... 2012 chevy equinox oxygen sensor replacement. 103K views · 6 years ago ...more. Uriel Rios. 476. Subscribe.Jan 4, 2020 · 2012 Chevy equinox 2.4L at about 135K miles threw a fan belt about 6 months ago on a road trip. Limped it to a dealership for fanbelt replacement and they said the timing chain was making a lot of noise and need replaced too. So I got it back home and had a shop do the timing chain with new tensioners and guide vanes as well as new water pump. converter: https://amzn.to/39lz3Be P0420 Check engine light how to fix it yourself. This car is a 2009 Chevy Malibu but the code and problem will be the same...P0420 Chevy Equinox Issue and Solutions to Fix Properly - UNCRD LAC. Check Details. Equinox awd 4dr 2lt utility. Chevy silverado p0405 code: q&a on replacing the valveEquinox p0411 secondary injection causing ajar circled opened slid hood cartalk Chevy equinox p0455 & p0405 codes: q&a on chevrolet dtcsEquinox egr p0404 valve …We have a 2010 Equinox 3.0 with ~65,000miles on it. Recently the CEL came on so I had the codes checked and was told it's a P0017 (CKP/CMP timing misalignment-ECM detected the crank sensor is not aligned with the cam sensor.) and a P0420 (Catalyst efficiency low-bank 1.) Was also told the P0017 probably caused the …I had P0420 in my 2011 I4 Terrain and it turned out the be a bad catalytic converter, not a cheap fix. ... -2015 Chevrolet Equinox SS 301HP V6-2024 Corvette Mid ...2010 Chevy Equinox 2.4 Ecotech with P0420, P0171 and a pending P0011. Has around 148k miles. Has new plugs, both O2 sensors, new cats, new gaskets on both intake and exhaust manifold. Checked all vac … read moreDiagnostic 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..

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