Code p0420 chevy equinox

Results 1 - 18 of 18 ... P0420 Code: Catalyst System Efficiency Below Threshold (Bank 1). This video shows you how to install new TRQ oxygen sensors on your 2010 ...

Dec 16, 2013 · 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 triggering of the P0420. P0017 on Chevy vehicles translates to Crankshaft Position – Exhaust Camshaft Position Not Plausible. Despite the varying names given by respective manufacturers, P0017 code simply means that the PCM believes the difference between the crankshaft position and the camshaft position exceeds specification.2013 Chevy Cruze LT 1.4 Turbo I have code P0420.I've changed the Bank 1 sensor 1 sensor and the code came back. ... 2005 Chevy Equinox w/ code P0420 scanned at Autozone.. 78,000miles.. AWD.. Any suggestions to fix this Catalyst System Efficiency Below Threshold problem! ...Common Reason: Code P0420 is often related to a bad catalytic converter. P0420 means the catalytic converter is not efficiently removing pollutants from the exhaust. Your car won’t pass an emissions test. A bad catalytic converter isn’t a hazard to the driver but it can overheat and destroy engine components.The P228D code triggers when the powertrain control module detects the actual fuel rail pressure is higher than the desired pressure. Note: The definition of the P228D code can be different depending on the vehicle manufacturer. Consult the appropriate repair manual or repair database for the exact code definition.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.The 2014 Chevy Equinox is a reliable and dependable SUV that has been a favorite among drivers for years. But how long can you expect it to last? Here, we’ll explore the expected lifespan of a 2014 Chevy Equinox and provide tips on how to e...Mar 8, 2022 · Ii have a 2011 Chevrolet Equinox that has reduced engine power and is reading codes p0014,p0016, p0017,p0089. I have changed the crankshaft position sensor but it didn't help. … read more

FFV 6-speed Automatic. Check engine code p0420 bank #1 - 2012 Chevrolet Equinox LS 4dr SUV 2.4L 4-cyl. FFV 6-speed Automatic. Posted by Anonymous on Jan 05, 2014. Leaded fuel was used where unleaded was called for. An oxygen sensor is not reading (functioning) properly. The engine coolant temperature sensor is not working …2012 Chevrolet Equinox 135,000miles 2.4L P0420 Keeps coming back. I have an up to date snap scanner and can read any - Answered by a verified Chevy Mechanic. ... I have a 2011 chevy equinox with the 2.4l. I have codes p0420, p0455, p0013. I know what these codes mean, the problem i'm having is I can't clear them out. ...Subject: Malfunction Indicator Lamp (MIL) Illuminated, DTC P0420 Set This bulletin replaces 18-NA-331. Please discard 18-NA-331. Brand: Model: Model Year: VIN: Engine: Transmission: from to from to Buick Encore 2013 2015 Equipped with 1.4L Engine (RPO LUV) Chevrolet Trax 2013 2015 Involved Region or Country ... codes in the “SPS …Ron. Automotive Tech. Vocational, Technical or Tra... 43,933 satisfied customers. P0420 code for 2012 Chevy equinox 2.4 flex fuel. No. No noticeable change in fuel consumption it does sometimes cut off after starting for the first time in the morning it also gets a rough bumping when you … read more.Feb 24, 2022 · I have a 2011 Chevy equinox, these codes keep coming up p0138, P0341, p0420, p0340. I had issues with jerking when idle, - Answered by a verified Chevy Mechanic We use cookies to give you the best possible experience on our website. If your Chevy Equinox is displaying the code P0420, it means that the catalytic converter on your vehicle is not functioning properly. The catalytic converter is a key component of your vehicle's emissions system, and when it's not working correctly, it can cause increased pollution and damage to your engine.

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 ... Dec 21, 2020 · 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 also trigger this code ... 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 triggering of the P0420.The P0420 code indicates that the Engine Control Module (ECM) has identified a decline in the efficiency of the catalytic converter on Bank 1. This could be attributed to a malfunctioning catalyst or potentially be a false alarm triggered by a defective O2 sensor.

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P0420 code for 2012 Chevy equinox 2.4 flex fuel. No. No noticeable change in fuel consumption it does sometimes cut off after starting for the first time in the ...This page is meant to help you troubleshoot the Chevy Express P0430 trouble code. It covers the P0430 code's meaning, symptoms, causes, and possible solutions. P0430 is an emissions-related trouble code and is virtually never a breakdown risk. P0430 is usually caused by a catalytic converter issue or a bad O2 sensor. Table of ContentsSaturday at 4:39 PM. 3rd Gen : 2018+ Current Chevy Equinox. 2nd Gen : 2010-2017 Chevy Equinox. 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 ...From the 2014 GM Repair Manual for both 4cyl and V-6: Start and idle engine for 3 minutes, high idle will start to decrease to normal. Ignition off for 60 seconds. Start and idle engine for 3 minutes, Drive and watch for normal idle, repeat procedure if necessary, clear all codes.I am working on a 2011 Chevy Equinox. I overhauled the engine. After I got it back together, it runs just fine but when it runs, but after the codes P228D, P0089, P0420 and P0271 all come up, the engi … read more

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.What is the Cost to Diagnose the Code P0420 Chevrolet? Labor: 1.0. To diagnose the P0420 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.The low side fuel pressure is greater than 300 kPa (44 psi). The diagnostic runs once for each engine start. The high pressure fuel pump has exceeded it's control limits. This condition exists when the high pressure fuel pump actuator command is 0° or greater than 240°. The condition exists for greater than 10 s.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.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...According to the GM service bulletin, in some 2011-2013 Chevy, Buick and Cadillac vehicles the code P0442 might be caused by the leaking EVAP Vent Solenoid (CVS). The vent solenoid must be tested under vacuum and replaced if leaking. Another GM service bulletin 02-06-04-037J for Chevy Silverado / GMC Sierra recommends replacing the vent valve ...Symptoms There are several reasons why your Chevrolet Equinox is reporting the p0420 trouble code. Most of the time, this trouble code means a bad oxygen sensor or an exhaust leak. In either case, the solution is to replace the oxygen sensor. In other cases, the problem is caused by a malfunctioning catalytic converter or exhaust manifold.What Does Chevrolet Equinox Code P0304 Mean? Chevrolet Equinox P0304 definition: Cylinder 4 Misfire Detected Issue Severity: SEVERE – Stop driving immediately. Repair Urgency: Fix this code immediately (same-day if possible) to avoid serious engine damage and dangerous driving conditions. Diagnosis: A multiple misfire can be caused by anything from faulty spark plugs to low […]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 …

The Chevy’s rear axle code contains information on the vehicle’s gear ratio, date of manufacture and the rear axle assembly plant. The prefix on the code consists of two letters for Chevrolet vehicles built in 1969 and earlier and three let...

P0013 on Some Chevrolet Vehicles. Code P0013 may appear on some Chevrolet vehicles like the 2016 Chevrolet Equinox L 2.4L L4. Conditions for running DTC P0013 in a 2016 Chevy Equinox can include: The ignition voltage is greater than 11 V. The ECM has commanded the camshaft position actuator solenoid valve On.The P0420 code in a Chevy Silverado will often be thrown if one of your truck’s oxygen sensors is not functioning correctly. ... Chevy Equinox P0420: Meaning, Causes, + How to Fix. GMC Yukon P0420: Meaning, Causes, + How to Fix. Jason on Mazda 6 P0320: Meaning, Causes, & Diagnosis.Popular Engine Codes P0420 P0172 P0171 P0128 P0300 P0456 P0430 P0442 P0455 P0113. Or check out our Diagnostic Trouble Codes Directory if you don’t see your code in the list of popular codes above. The Chevy Silverado & Other Chevy Check Engine Lights. If you’ve got a Silverado, check out our article on the best and worst years …============================Claim your FREE engine code eraser 👉 https://free.nonda.co 👈============================Engine Code P0420 Saving Repair Parts:C...What Does the P0420 Code Mean? 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.Results 1 - 17 of 17 ... 4L O2 sensors">Q: code P0420 on my 2012 Chevy Equinox 2. The average cost for a Chevrolet Equinox Oxygen Sensor Replacement is between $232 ...P0017 on Chevy vehicles translates to Crankshaft Position – Exhaust Camshaft Position Not Plausible. Despite the varying names given by respective manufacturers, P0017 code simply means that the PCM believes the difference between the crankshaft position and the camshaft position exceeds specification.I have a 2012 Chevy Equinox with codes PO300, ... Need help on a 2011 Chevy equinox LT, has a code of: P0420. Hi, need help on a 2011 Chevy equinox LT, has a code of: P0420. If i clear it out , It comes back before starting the car again. Bad O2 Sensor? Thanks in advance, ...

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Before you fix P0420, make sure you correctly diagnose the cause of the code first. If you don’t, you could end up spending $1000s buying a new catalytic converter when that wasn’t the cause of the code. Below are some of the main causes of a P0420 code. Click on sections below to learn more about each repair.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 also trigger this code ...Diagnosing the error code P0420 on a Chevy Equinox (2011) Wicked Wrench Garage 540 subscribers 8 Share 2.7K views 8 months ago SEATTLE Diagnosing the error code …Are you in the market for a new car and interested in leasing a Chevy Equinox? Leasing can be a great option for those who want to enjoy the benefits of driving a brand-new vehicle without committing to long-term ownership.2018 Equinox LT1 1.5 L 4 cyl, AWD, ... Came back with a P0420 code, which says the Bank 1 catalyst system efficiency was below threshold for a predetermined period of time. They say I need to replace the catalytic converter(s). ... Chevy Equinox, and Cadillac SRX owners and enthusiasts. Come join the discussion about modifications, …Dec 13, 2022 · Diagnosis: The most common cause of Chevrolet Equinox P0420 is a bad catalytic converter, but it can be caused by anything from a faulty oxygen sensor to a rich or lean running condition, or misfires. There are many variables that could cause this code. P0191 Chevy Equinox code meaning. If you’re a Chevy Equinox owner and have been getting the P0191 code, don’t worry, you’re not alone. The P0191 Chevy Equinox OBD-II code is a common one and usually indicates a fuel rail pressure sensor issue.. In this post, we’ll go over what the P0191 code means, what causes it, and how to fix it.FFV 6-speed Automatic. Check engine code p0420 bank #1 - 2012 Chevrolet Equinox LS 4dr SUV 2.4L 4-cyl. FFV 6-speed Automatic. Posted by Anonymous on Jan 05, 2014. Leaded fuel was used where unleaded was called for. An oxygen sensor is not reading (functioning) properly. The engine coolant temperature sensor is not working …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 ...What does this mean? What are the Possible Causes of the DTC P0420 Chevrolet? NOTE: The causes shown may not be a complete list of all potential problems, and it is possible …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 … ….

2012 Chevrolet Equinox 135,000miles 2.4L P0420 Keeps coming back. I have an up to date snap scanner and can read any - Answered by a verified Chevy Mechanic. ... I have a 2011 chevy equinox with the 2.4l. I have codes p0420, p0455, p0013. I know what these codes mean, the problem i'm having is I can't clear them out. ...Watch on What Does Chevy Code P0420 Mean? Chevrolet 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.The P0420 code indicates that the Engine Control Module (ECM) has identified a decline in the efficiency of the catalytic converter on Bank 1. This could be attributed to a malfunctioning catalyst or potentially …2013 Chevy Equinox - 86k miles - 4 cylinder - otherwise in good shape. Started burning oil last year - realized it and started making sure it was topped off - but now the P0420 code has popped up. took it to a shop who gave me a quote between 1600 and 1800 depending on the part used to replace the front CC which is a ****ton of extra work.The most common P0420 and P0430 cause is a clogged catalytic converter filter, which requires replacing the entire catalytic converter. Other causes can include: A faulty or failing o2 sensor. Catalytic converter leaks. Exhaust , intake, or mass airflow (MAF) sensor leaks or other issues.P0420 is one of the top 5 trouble codes for the Chevrolet Equinox. Chevrolet Equinox P0420 Symptoms. Check Engine Light is on; Lack of power from the engine; Decreased fuel economy; Rotten egg or a sulfur smell; How Do I Fix Chevrolet Equinox Code P0420? The first step is to get it diagnosed to figure out what is causing the catalytic converter ...Nov 25, 2020 · Need help on a 2011 Chevy equinox LT, has a code of: P0420. Hi, need help on a 2011 Chevy equinox LT, has a code of: P0420. If i clear it out , It comes back before starting the car again. 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.Aug 23, 2018 · 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. Code p0420 chevy equinox, A knock sensor is a one-wire or two-wire sensor mounted on a cylinder block, and it detects engine knocking. “Knock sensor 1” in this code refers to the first sensor (if there are two), while “bank 1” refers to the side of the engine with cylinder #1., Feb 24, 2022 · I have a 2011 Chevy equinox, these codes keep coming up p0138, P0341, p0420, p0340. I had issues with jerking when idle, - Answered by a verified Chevy Mechanic We use cookies to give you the best possible experience on our website. , What does OBD code P0420 mean on a Chevrolet Equinox? This code basically means that the engine's O2 sensors associated with your Chevrolet Equinox's …, I have a 2012 Chevy Equinox with codes PO300, ... Need help on a 2011 Chevy equinox LT, has a code of: P0420. Hi, need help on a 2011 Chevy equinox LT, has a code of: P0420. If i clear it out , It comes back before starting the car again. Bad O2 Sensor? Thanks in advance, ..., How to diagnose, repair, and info on symptoms and causes of a P0420 OBD-II trouble code which means the catalytic converter is no longer performing at a normal level. Often this means the bank 1 converter will need to be replaced. Search. ... 2010 Chevy Traverse P0420 code I have a 2010 Chevy Traverse with approx. 150000 miles on it. About a ..., What is the Cost to Diagnose the Code P0420 Chevrolet? Labor: 1.0. To diagnose the P0420 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., 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 extra ..., 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. , Hey YouTube Fam, I gotta Chevy Equinox in the shop with a large EVAP leak. The customer desperately needed to get her emissions. Here in Georgia, you can’t ..., Technician. automotive technology. 157 satisfied customers. I am working on a 2011 Chevy Equinox. I was getting a cat. I am working on a 2011 Chevy Equinox. I was getting a cat low efficiency code P0420 (Catalytic system efficiency below threshold Bank 1), so I … read more., Symptoms There are several reasons why your Chevrolet Equinox is reporting the p0420 trouble code. Most of the time, this trouble code means a bad oxygen sensor or an exhaust leak. In either case, the solution is to replace the oxygen sensor. In other cases, the problem is caused by a malfunctioning catalytic converter or exhaust manifold., 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 ..., 2018 Equinox LT1 1.5 L 4 cyl, AWD, ... Came back with a P0420 code, which says the Bank 1 catalyst system efficiency was below threshold for a predetermined period of time. They say I need to replace the catalytic converter(s). ... Chevy Equinox, and Cadillac SRX owners and enthusiasts. Come join the discussion about modifications, …, Apr 30, 2021 · =====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈== How to Fix CHEVROLET P0420 ==Engine Code CHEVROLET P0420 Savin... , FFV 6-speed Automatic. Check engine code p0420 bank #1 - 2012 Chevrolet Equinox LS 4dr SUV 2.4L 4-cyl. FFV 6-speed Automatic. Posted by Anonymous on Jan 05, 2014. Leaded fuel was used where unleaded was called for. An oxygen sensor is not reading (functioning) properly. The engine coolant temperature sensor is not working …, 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 ..., Mar 13, 2023 · What Does Code P0420 Mean? 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 ... , P0324 is a diagnostic trouble code (DTC) for "Knock Control System Error". 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 for $154.99 ., 1999 White C5 Coupe · #2 · Apr 25, 2015. gos333 said: 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 have to remove the transfer case to replace the cat also., 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 triggering of the P0420., Code P0446 sometimes indicates that an electrical failure has been detected in either the vent valve itself or its control circuit. While the P0446 can indicate an electrical problem on later model Fords, which, for some strange reason chooses to look at the vent valve electrical circuit to set this code, the P0446 code is highly unlikely to be ..., What Does Code P0420 Mean? 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., If your Chevy Equinox is displaying the code P0420, it means that the catalytic converter on your vehicle is not functioning properly. The catalytic converter is a key component of your vehicle's emissions system, and when it's not working correctly, it can cause increased pollution and damage to your engine., 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., 2014 Chevy Equinox P0420. Thread starter possum328; Start date Sep 8, 2023; 1; 2; Next. 1 of 2 Go to page. Go. Next Last. P. possum328. Joined Feb 1, 2012 ... Was near an Oreilly’s and stopped in to have the code read. Got the P0420 cat related code. Could that have any correlation with the solenoid replacements or are the two …, Diagnosing the error code P0420 on a Chevy Equinox (2011) Wicked Wrench Garage 540 subscribers 8 Share 2.7K views 8 months ago SEATTLE Diagnosing the error code P0420 on a Chevy..., Popular Engine Codes P0420 P0172 P0171 P0128 P0300 P0456 P0430 P0442 P0455 P0113. Or check out our Diagnostic Trouble Codes Directory if you don’t see your code in the list of popular codes above. The Chevy Silverado & Other Chevy Check Engine Lights. If you’ve got a Silverado, check out our article on the best and worst years …, A check engine light for the Chevrolet P0128 code means that the fuel system is running too lean. Find out how to fix it in this article! 1. Year. 2. Make. 3. Model. 4. Trim. 5. Fuel Type. ... Popular Engine Codes P0420 P0172 P00171 P0128 P0300 P0456 P0430 P0442 P0455 P0113. Fixed It But The Check Engine Light Is Still On?, What is the Cost to Diagnose the Code P0420 Chevrolet? Labor: 1.0. The cost to diagnose the P0420 Chevrolet code is 1.0 hour of labor. 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. Most auto repair shops charge between $75 and $150 per hour., Chevy Equinox P0013: “B” Camshaft Position → Open/Short OCV → Bank 1. P0013 is a somewhat frequent OBDII trouble code. It is generic, which means that it has the same meaning for the Chevy Equinox, as it would any other vehicle. It only affects vehicles with Variable Valve Timing., 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 ... , The enigmatic P0420 code twirls through the veins of every Chevy Equinox owner's nightmare. Like a cryptic riddle, it challenges our automotive prowess. Perplexed, we …, What Does Chevy Code P0420 Mean? Chevrolet 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.