P0420 chevrolet equinox

P0420 definition : Catalyst system efficiency below threshold (Bank 1) Issue Severity: MODERATE – Extended driving with this code can cause internal engine damage. Repair Urgency: Get this code fixed as soon as possible to avoid further damage to your emission system and possible engine damage. Diagnosis: The most common cause of P0420 is a ...

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. 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 moreP0411 is a general OBDII trouble code, which means that it has the same meaning for the Chevy Equinox as it would any other car or truck. By definition, the code is letting you know that the ECM has detected incorrect flow in the secondary air injection system. P0411: Secondary Air Injection System → Incorrect Flow Detected The price of the 2020 Chevrolet Equinox starts at $24,995 and goes up to $32,595 depending on the trim and options. The midrange Equinox LT is the best value in its class—so long as you're ... P0420 How To Diagnose Bad Catalytic Converter EricTheCarGuy Your best bet , take your vehicle to a qualified repair shop that knows how to diagnose this P0420 code . Read full answer Feb 03, 2017 • Chevrolet Equinox Cars & Trucks5 Jan 2021 ... Some check engine codes, including the P0420, can mean you have a leaky exhaust. Check for leaks before you go swapping parts.P0300 and p0420 on a 2011 Chevy equinox 2.4L LS. 105000. Plugs, coils, crank sensor and both o2s have been replaced and - Answered by a verified Chevy Mechanic We use cookies to give you the best possible experience on our website.

About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...P0420 refers to "bank 1" of the engine (comprised of cylinders 1 2 and 3) catalytic converter not being functional or efficient. This would also not be likely to cause your described concerns. ... 2007 Chevrolet Equinox Estimates. Brake Master Cylinder Replacement ($291 - $443) in Broadview Heights, OH. Engine Compression Test ($108 …P0420 is an OBDII trouble code. The code technically stands for: Catalyst System Efficiency Below Threshold. Your Chevrolet has at least two oxygen sensors, one before and after the catalytic converter. Among the many jobs that oxygen sensors have is they have to measure the emissions levels coming in and out of the converter.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 ...P0030 Chevrolet Code - HO2S Heater Control Circuit Bank 1 Sensor 1 - Code Popularity: 81,496 Views - Repair Importance Level: 2/3 - Repair Difficulty Level: 2/3. Table of contents. Created and updated by William Orellana on Mar 23, 2024. Possible Causes; Tech Notes;P0420 Chevy Equinox Issue and Solutions to Fix Properly - UNCRD LAC. 2015 chevy equinox p0172 Chip shortages may heavily impact new vehicle outputs Cb automotive llc – car dealer in corbin, ky. Chevrolet equinox. Equinox p0014 4lNeed help P0420 chevy equinox issue and solutions to fix properlyEquinox lt fwd.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 effectively. 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 ...

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.The Chevrolet Cavalier proved that America could compete with the imports, reporting top sales numbers each year. Learn about the Chevy Cavalier. Advertisement The four-cylinder en...Do you have Check Engine Light on your car's dashboard? Does your car read code P0420? Are you unable to pass emission test or is the catalytic converter jus...Visit me at: http://www.ericthecarguy.com/O2 Sensor Video: https://www.youtube.com/watch?v=NIzcztO-CCsDiscussion about this video: http://www.ericthecarguy...6.4K views 1 year ago SEATTLE. Diagnosing the error code P0420 on a Chevy Equinox (2011) Code P0420 indicates that the catalytic converter is not …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.

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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...Chevrolet. Equinox. 2020. When the Chevy Equinox displays a p0420 fault code, this indicates a bad oxygen sensor. Replacing the responsible oxygen sensor will usually make this code go away. In some more serious cases, the muffler of the car might need to be fixed or replaced to get rid of the code. Exhaust manifold with leaks in them could ...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: …1. I have 2011 Chevy equinox lt with the 2.4 four cylinder engine. Everything seems to be working fine except I can not get it to quite sending out p0300 code. I've changed plugs and yes used the AC Delco plugs that it only likes. Replaced coil packs and I've replaced the MAF. I've cleaned the PCV and sea foamed it for carbon build up.Feb 6, 2023 · P0172 is a diagnostic trouble code (DTC) that indicates a fuel system rich condition in the Chevy Equinox. The code is triggered when the powertrain control module (PCM) detects a fuel-to-air ratio that is too rich for efficient engine operation. This condition can be caused by a variety of factors, and it is important to identify and repair ... 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.

1378 posts · Joined 2014. #3 · Feb 18, 2021. P0420 is often the sign of a failed cat. Since the O2 sensors have been replaced this is much more likely. Since you also have a P0299, this is likely the cause of the failed cat. You need to determine what caused the P0299, could be an air leak, turbo problems.P0420 Permanent Code is the ECU saying the "second" O2 sensor(s) after your first catalytic converter(s) are not sending the …Diagnostic trouble code (DTC) P013E stands for “O2 Sensor Delayed Response–Rich to Lean (Bank 1, Sensor 2).” The code is logged when the powertrain control module (PCM) perceives a delay in response from the downstream oxygen (O2) sensor located in bank 1.Error Code P0411 ?!?! WHAT DO I DO?? Here's a few quick checks for the Secondary Air Injection pumps.Oct 19, 2021. Messages. 210. Reaction score. 25. ok i have the 2013 equinox nd i get the p0420 code all day long. i know why because the engine burned so much oil i had to have a refinery in the backyard to keep up. anyway because we do not live in a test state i drilled out the cat so the engine could breath after i rebuilt the engine.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 …Aug 9, 2021 · Thank you. A job like this to replace the catalytic converter on this vehicle can run anywhere from $800 to approximately $1200 depending on the shops labor rate and where they get the part from. You can get a cheaper aftermarket converter for the vehicle but I would strongly recommend against it. Chevy Equinox. Equinox General Discussion. Beware of the P0420 code. Jump to Latest Follow 29K views 8 ... 2011 Equinox, AWD, 107,000 miles has P0420 MIL code needs new cat converter. Dealer wants 1600.00.... reason the cat went out was excessive oil consumption which clogged the ceramic inside of the cat, evidently you …This page is meant to help you troubleshoot the Chevy Suburban 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. A failing oxygen sensor or bad catalytic converter are the most common causes of P0420. …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. P0420 Permanent Code is the ECU saying the "second" O2 sensor(s) after your first catalytic converter(s) are not sending the …P0300 is a generic OBDII code that can occur with the Chevy Equinox. This code indicates that your vehicle’s engine is misfiring and can be a drivability threat. P0300 is often accompanied by cylinder-specific misfire codes (P030X, where the X indicates the cylinder number that is misfiring). If you have P0300 and a cylinder-specific misfire ...

P0420 Chevy Equinox Issue and Solutions to Fix Properly - UNCRD LAC. 2015 chevy equinox p0172 Chip shortages may heavily impact new vehicle outputs Cb automotive llc – car dealer in corbin, ky. Chevrolet equinox. Equinox p0014 4lNeed help P0420 chevy equinox issue and solutions to fix properlyEquinox lt fwd.

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...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 ...2011 Chevy Equinox Ls Automatic 2.4 180,000 miles. P0420. what are the cheaper options before replacing whole catalytic converter. Please help! What should I do first and which brands are better? I recently bought the car at a used dealership. What are your options and thoughts on my problem.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 …Sep 7, 2017 · 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: 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.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 making ...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 making ...

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P0300 is a generic OBDII code that can occur with the Chevy Equinox. This code indicates that your vehicle’s engine is misfiring and can be a drivability threat. P0300 is often accompanied by cylinder-specific misfire codes (P030X, where the X indicates the cylinder number that is misfiring). If you have P0300 and a cylinder-specific misfire ...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 …The mechanic will use the OBD-II scanner to retrieve the freeze frame data to find out what the condition of your 2015 Chevrolet Equinox was when trouble code P0191 was set by the power control module (PCM). ... P0420 Catalyst System Efficiency Below Threshold; P0421 Cataytic Converter Oxygen Sensor Below Threshold;Feb 6, 2023 · P0172 is a diagnostic trouble code (DTC) that indicates a fuel system rich condition in the Chevy Equinox. The code is triggered when the powertrain control module (PCM) detects a fuel-to-air ratio that is too rich for efficient engine operation. This condition can be caused by a variety of factors, and it is important to identify and repair ... 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 - YouTube2011 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 …Multiple codes, diagnosis in different directions, sad ending.Do you have Check Engine Light on your car's dashboard? Does your car read code P0420? Are you unable to pass emission test or is the catalytic converter jus...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. ….

Possible Causes. NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes. Faulty Three-way …Jul 30, 2020 · Have you had trouble finding youre down stream oxygen sensor? We had the common check engine code p0420 come up we started with replacing the upstream senso... 13 Jan 2018 ... 2012 chevy equinox oxygen sensor replacement. 103K views · 6 years ago ...more. Uriel Rios. 476. Subscribe.P0420 is an OBDII trouble code. The code technically stands for: Catalyst System Efficiency Below Threshold. Your Chevrolet has at least two oxygen sensors, one before and after the catalytic converter. Among the many jobs that oxygen sensors have is they have to measure the emissions levels coming in and out of the converter.Possible Causes. NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes. Faulty Three-way …Gasoline and batteries are getting a divorce. Plug-in hybrid cars, originally designed to be the transition between conventional cars and their electric successors, are looking mor...Clear the code and test drive the vehicle. See if the P0014 code returns. If it does, replace the exhaust camshaft solenoid actuator. Clear the code. Test drive the vehicle. If the code returns, the timing chain needs to be replaced. The only way to get rid of the P0420 code is to replace the catalytic converter. Ask Your Own Chevy Question.Jun 5, 2017 · R. 2013 Equinox P0700 and P0601 Code Car failed on interstate. Reba. Oct 12, 2023. 2010-2017 Equinox Maintenance. P0420 refers to "bank 1" of the engine (comprised of cylinders 1 2 and 3) catalytic converter not being functional or efficient. This would also not be likely to cause your described concerns. ... 2007 Chevrolet Equinox Estimates. Brake Master Cylinder Replacement ($291 - $443) in Broadview Heights, OH. Engine Compression Test ($108 …2 Nov 2022 ... Comments10 · 9 Solutions to Fix P0420 - Don't Start Fixing Before Watching This · 3 Illegal Mods That Will Make Your Car Run Better. P0420 chevrolet equinox, P0420 definition : Catalyst system efficiency below threshold (Bank 1) Issue Severity: MODERATE – Extended driving with this code can cause internal engine damage. Repair Urgency: Get this code fixed as soon as possible to avoid further damage to your emission system and possible engine damage. Diagnosis: The most common cause of P0420 is a ..., Automotive Expert. Your welcome and if you need anything else just let me know. Have a P0420 code on a 2010 equinox 2.4l 4cyl. Just measured back pressure at at upstream sensor port it appears OK--at idle its around 1.25psi -1.5psi and when at 2000-2500 rpm it stays at the same reading., When there is a large leak in the Chevy Equinox’s EVAP system, it will throw the P0455 OBDII Code. P0455 indicates a large leak in the evaporative emission control system. (EVAP). There are different leak size codes. For example, P0456 means your Equinox has a small EVAP leak. While the trouble code may state that there is a …, 2011 Equinox 2.4L P0420 DIY Cat replacement. 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 engines have burned a lot of oil as we all know and i'm sure the cat is coked up with junk. I see a Chevy TSB out there for an ..., Este es un componente vital para disminuir el impacto ambiental. El convertidor posee un monitor, el cual permite medir la eficacia de este. El código P0420 es común en: Acura RSX, Chevrolet Aveo, Chevrolet Corsa, Chevrolet Cruze, Chevrolet Montana, Chevrolet Sonic, Ford Explorer, Ford Focus, Honda Fit, Nissan Altima, Nissan March, Nissan ..., 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 ..., Memberships to Equinox Fitness cost in the range of $155 per month for a single club to $195 per month for an all-access, world-wide pass. Signing up for a membership requires payi..., How to Fix CHEVROLET P0420 Engine Code in 3 Minutes [3 Methods / Only $19.99] - YouTube. nonda. 91.7K subscribers. Subscribed. 553. 123K views 3 years ago …, 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., 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 ... , Oct 8, 2021 · Código P0420: significado, síntomas, causas (soluciones fáciles) Entre las causas, la más frecuente del código P0420 es por un convertidor catalítico averiado. Igualmente puede deberse por un sensor O2 en mal estado, una fuga de escape, fuga de admisión o ubicación errónea del convertidor catalítico. Otra causa, sería un convertidor ... , Visit me at: http://www.ericthecarguy.com/O2 Sensor Video: https://www.youtube.com/watch?v=NIzcztO-CCsDiscussion about this video: http://www.ericthecarguy..., 30 Apr 2020 ... Se tiene que revisar el sensor de oxígeno del catalizador y el funcionamiento del catalizador que si respondan a las pruebas , si responden ..., , Aug 10, 2018 · When there is a large leak in the Chevy Equinox’s EVAP system, it will throw the P0455 OBDII Code. P0455 indicates a large leak in the evaporative emission control system. (EVAP). There are different leak size codes. For example, P0456 means your Equinox has a small EVAP leak. While the trouble code may state that there is a “large leak ... , P0420 Chevy Equinox engine code is caused by a malfunctioning catalytic converter. This system breaks down harmful pollutants and makes the vehicle run cleaner. If this part is damaged, the car will fail the emission test., OBD II fault code P0420 is a generic code that is defined as “Catalyst System Efficiency Below Threshold (Bank 1)”, and is set when the PCM (Powertrain Control Module) detects a condition that indicates that the catalytic converter on Bank 1 is operating below the minimum allowable efficiency threshold. Note that on engines with two banks ..., If your Chevy Equinox is showing the dreaded P0420 code, it’s important to consider seeking professional help to resolve the issue. While some car enthusiasts may attempt to troubleshoot and fix the problem themselves, it’s crucial to understand when the expertise of a professional is necessary for a more effective and long-lasting solution., Support Small Business! Please Subscribe/Donate https://bit.ly/3lQp0aNChevy Equinox Engine Power is Reduced SolvedIn this we are going to show you a possib..., 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., 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. , 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 ..., Have you had trouble finding youre down stream oxygen sensor? We had the common check engine code p0420 come up we started with replacing the upstream senso..., October 03, 2023 -. P0420 stands for a code that signals the "Catalyst System Low Efficiency" issue and is a relatively common occurrence, especially with cars that are only driven over short distances. As the catalytic converter plays a vital role in reducing emissions and maintaining the overall performance of your vehicle, it is important to ..., Top Answer. Ryan S. December 28, 2020. The Chevy Equinox did have a recall and common problem that lead to the Exhaust manifold to crack near the O2 sensor and would leak exhaust through the HVAC system of the vehicle. You can get the issue repaired by the dealership if it falls into their specified category of models that are …, P0300 and p0420 on a 2011 Chevy equinox 2.4L LS. 105000. Plugs, coils, crank sensor and both o2s have been replaced and - Answered by a verified Chevy Mechanic We use cookies to give you the best possible experience on our website., 2 Jan 2023 ... Failed o2 oxygen sensor on Chevy Equinox SUV? Before replacing the o2 sensors make sure to check the upstream and downstream oxygen o2 ..., 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., This includes the Chevy Equinox. VVT adjusts the position of the camshaft (s) to maximize the combustion efficiency of the motor. P0014 means that the camshaft position is too far advanced from where it should be in relation to normal operating specs. Before doing anything, check your Equinox’s oil level. Low oil is the number one cause …, P0420 is a diagnostic trouble code (DTC) for "Catalyst System Efficiency Below Threshold (Bank 1)". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic ... , When the Chevy Equinox displays a p0420 fault code, this indicates a bad oxygen sensor. Replacing the responsible oxygen sensor will usually make this code go …, I have 2012 Chevrolet equinox 2.4 engine I got engine code P 2097 and P0420 - Answered by a verified Chevy Mechanic. We use cookies to give you the best possible experience on our website. ... P0420 code for …, 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 ...