Acura automobile dealer. January 18, 2014 14-002 Applies To: SeeVEHICLES AFFECTED MIL Is OnWith DTC P0420 or P0430 SYMPTOM The MIL is on with DTC P0420 or DTC P0430 (catalyst system efficiency below threshold) with a possible DTC P2243 or DTC P2247 (A/F sensor 1 circuit high voltage). POSSIBLE CAUSE One or both primary A/F Sensor (Air Fuel ... Diagnose Difficulty of Inspecting Get Additional Help The P0420 code signals a low catalyst system efficiency. This code suggests that the oxygen levels are below the desired …Save. Nick_CL9 · #8 · Feb 16, 2015. P0420 isn't even an oxygen sensor code, it is a catalyst efficiency code. If you were to get a P0135 then it would be o2 related but it isn't in this case. Fix it right the first time and be done with it.Mar 3, 2011 · Hanuman01mdx · #2 · Mar 13, 2011. code p0420 is usually the cat but also the 02 sensor i had that code and turn out it was the cat. but i also started with the 02 first to make sure. Reply. Save. M. mantovar Discussion starter · #3 · Mar 13, 2011. P04020. After Acura delar and a private shop told me it was def the cat, because of the miles ... The code P0420 stands for Catalyst System Efficiency Below Threshold. This means that the oxygen sensors in your exhaust system have detected that the catalytic converter is not working as efficiently as it should. ... I spent a few years in aviation manufacturing after 34 years in the Acura and Honda repair field.Brewgod23 Discussion starter · Mar 21, 2007. My check engine light turned "On" on my Acura TL 2002. I took it to the dealer and he said he replaced my Catylitic Converter with a used one. I drove away and the next day the check engine light came back on. PEP Boys told me that the OBD II code was P0420.The Acura Car TLX is a powerful and luxurious vehicle that offers drivers the perfect combination of performance and style. With its sleek design, advanced technology, and impressive powertrain, the TLX is sure to make any driver feel like ...My 2004 MDX with 249k miles had the following codes P0171, P2195 and P0420 and was getting poor gas mileage. I replaced the rear cylinder bank pre-cat sensor with an aftermarket sensor, Kwiksen from Amazon. I then cleared the codes. Replacing the sensor got rid of the P0171 and P2195 codes but the P0420 remained.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.Oct 14, 2012 · TexasHonda · #2 · Oct 14, 2012. This code afflicts many vehicles of all brands. You have replaced O2 sensors (only the forward affects P0420). The other possibility, besides a bad converter, is an exhaust leak. If you inspect and find no exhaust leaks, the converter is likely, particularly if everything else is OK; gas mileage, accleration, etc. I own 2007 Acura MDX. I have P0420 and P0430 DTC. I hookup with ODB2 scaner and did live param testing and trigger frame record. I shows that on the trigger frame EVAP system pressure dropping from 15000 to almost 0. Is it possible that during purging fuel vapors P0420 and P0430 getting triggered. What can couse it? Thanks for helpP0141 DTC stands for Oxygen Sensor Heater Circuit Malfunction on Bank 1, Sensor 2. It shows that the onboard heater circuit isn’t operating normally on the downstream oxygen sensor from bank 1. With a fault in the heater circuit, the PCM sets the P0141 trouble code. This generic trouble code is very similar to P0135, except that it is …Dec 23, 2018 · P0430 Diagnosis. The most common fix for P0430 in the Acura TLX is a new catalytic converter, followed by replacing the Oxygen sensor. Before taking your TLX into an exhaust shop for a new catalytic converter, let’s ensure that’s what you need. Here’s a good P0430 diagnostic order for the Acura TLX: 1. Check for Other Codes. Code P0420 Tech Notes. As the code description implies, the P0420 code means that the vehicle's Engine Control Module (ECM) has detected that the Three-way Catalyst Converter is not working properly (it is not as efficient as the factory expects). Replacing the oxygen (O2) sensors may sometimes fix the code, but in most cases, the Three-way ...I compared lice data from my 2012 mdx that has no light on to my 2005 mdx and the only difference I’d bank 2 sensor 2 doesn’t move much during driving stays around 0.400vokts... P0420 and P0430 are both downstream codes for "below efficiency" cat performance. P0420 for bank 1 (back side of the motor) and P0430 for bank 2 (front side).answered Dec 30, 2021 by OBDIITech (7.4k points) Your 2002 Acura MDX does not have a dedicated Control Unit for the transmission, instead, the transmission control and diagnosis are performed by the Powertrain Control Module (PCM). …Oct 14, 2012 · TexasHonda · #2 · Oct 14, 2012. This code afflicts many vehicles of all brands. You have replaced O2 sensors (only the forward affects P0420). The other possibility, besides a bad converter, is an exhaust leak. If you inspect and find no exhaust leaks, the converter is likely, particularly if everything else is OK; gas mileage, accleration, etc. Kensei Discussion starter · Sep 14, 2021. Hello all. My check engine light came on then came off and then came back on again within a span of 2-3 weeks. Finally used a scanner to check for a code and got P0420 which deals with the cat. My problem is that the car is straight piped (and has passed smog in May) so I really dont know what to do or ...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...Mar 3, 2011 · Hanuman01mdx · #2 · Mar 13, 2011. code p0420 is usually the cat but also the 02 sensor i had that code and turn out it was the cat. but i also started with the 02 first to make sure. Reply. Save. M. mantovar Discussion starter · #3 · Mar 13, 2011. P04020. After Acura delar and a private shop told me it was def the cat, because of the miles ... Apr 20, 2022 · 2007 MDX Tech DIY performed: Fluid change: engine oil, ATF, transfer case, rear diff, PS, brake, coolant. Parts R&R: air filters, both AFR sensors, spark plugs, oil pressure switch, radiator, drive belt & tensioner, sway bar end links and bushings, brake pads, TPMS sensors, low beam and DRL bulbs, wiper inserts, hood struts, spark plug tube ... The P0430 trouble code is considered generic, meaning it occurs on vehicles of any type and model. The P0430 shows a problem with the emissions system. It is exactly the same as P0420 DTC, with the only difference being that that one refers to the oxygen sensors on bank 1 instead. These codes illustrate two different sides of the engine.Allen Taddicken. Owner/Lead technician. 4 years college grad. 1,789 satisfied customers. 2006 mdx, 200k, cel with code p0420, catalytic inefficiency. 2006 mdx, 200k, cel with code p0420, catalytic inefficiency Bank 1. Had this code for about 4 months.LeftOverParts · #5 · Aug 17, 2018. FWIW, when I got the P0420 code, I ended up changing the cat by the firewall. Service manual said low quality gas can cause the code so tried better premium gas first. Some say to try changing the lower O2 sensor before changing the cat. I ended up getting a Honda cat online.Jump to Latest Follow 99643 Views 27 Replies 18 Participants Last post by RallyD , Feb 20, 2021 M mjbrox Discussion starter · Dec 31, 2009 I have had the P0420 code show up twice now Before I do any thing expensive I am going to pull out the ERG valve and clean it out. the instructions for doing it where not all that clear to me.The P0740 trouble code indicates that the Powertrain Control Module (PCM) detected an abnormal reading from the torque converter clutch circuit. Usually, the PCM goes through numerous checks and the reading needs to be abnormal for a specified amount of time before the light comes on.1 Answer. Try VTM-4 Switch. This is the part. we have a 2005 acura mdx with code p1710. says it needs a low hold switch, (or first hold) ...Catalytic converters don't last forever. In this video, we diagnose a P0420 on a Toyota Camry with over 330,000 miles! Enjoy!A code P0420 may mean that one or more of the following has happened: 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 properly. Damaged or leaking exhaust manifold / catalytic converter / exhaust pipe. Retarded spark timing.=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈==== How to Fix HONDA P0420 ====Engine Code HONDA P0420 Saving Re...I've had the P0420 code appear on my 2008 with 150K miles frequently for the past 1-1/2 years. I don't drive it much in the summer but it is generally when the outside temp is below 50F. I think it's time for a new converter. I have the following list of parts that I think I need: 18290-RYE-A00 (qty 1) 18115-RCA-A01 (qty 1) 18212-SA7-003 (qty 2)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 …What Does the P0420 Acura Code Mean? The Three-Way Catalytic Converter (TWC) converts Hydrocarbons (HC), Carbon Monoxide (CO), and Oxides of Nitrogen (NOx) in the exhaust gas to water vapor, Carbon Dioxide (CO 2), and Dinitrogen (N 2).I've had the P0420 code appear on my 2008 with 150K miles frequently for the past 1-1/2 years. I don't drive it much in the summer but it is generally when the outside temp is below 50F. I think it's time for a new converter. I have the following list of parts that I think I need: 18290-RYE-A00 (qty 1) 18115-RCA-A01 (qty 1) 18212-SA7-003 (qty 2)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.Here is a quick video showing how I cleared my check engine light on my 2005 Acura RL using CataClean.Subscribe to Channel: http://bit.ly/RnWyoutubeSee our v...Related: P0420 Acura TSX. Acura TSX P0401 Symptoms. Most of the time, there will not be symptoms associated with P0401 in the Acura TSX. There may be a slight ping or knocking sound on rare occasions. Service Engine Soon Light– P0401 will illuminate the service engine soon light. Knocking Sound– In very rare cases, a noticeable knock …Subject: Malfunction Indicator Lamp (MIL) Illuminated, DTC P0420 Set Brand: Model: Model Year: VIN: Engine: Transmission: from to from to Buick Encore 2013 2015 All All Chevrolet Trax 2013 2015 Involved Region or Country North America and N.A. Export Regions Condition Some customers may comment that the MIL is on/illuminated and DTC P0420 …P0420 acura - mdx. 0 votes . 965 views. asked Aug 7, 2016 by anonymous. I have acura 03 mdx ,getting codes P2413 and P0420 ( low bank 1) what is wrongMay 27, 2013 · Code p0420 acura m'dx 1996-newer (OBD-II) vehicles use oxygen sensors and a catalytic converter to reduce emissions. There is one O2 (oxygen) sensor in front of the catalytic converter (called upstream), and one behind it (downstream). Dec 23, 2018 · The most common fix for P0420 in the Acura RL is a new catalytic converter, followed by an O2 sensor replacement. Before taking your RL 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 Acura RL: 1. Check for Other Codes. See Also: P0420 Acura MDX. Acura MDX P0430 Code Symptoms. There aren’t usually any drivability issues associated with P0430. For most people the first sign that anything is wrong at all is the service engine soon light coming on.Definition Symptoms Causes Diagnosis Acura TL P0420 Quick Info Table Acura TL P0420 OBDII Code Defined P0420 is generic (has the same meaning for all vehicles made in 1996+) OBDII trouble code. Here's the technical definition for your car: P0420: Catalyst System Efficiency Below Threshold (Bank 1) Catalyst System EfficiencyHere are the most common causes of P0420 in the Acura RDX: Likely Causes. Bad catalytic converter; Bad O2 sensor; Other Causes. Exhaust leak; O2 …Oct 8, 2022 · The 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 ... P0420 and P0430. 2003 model. Got em both at the same time. Oddly enough right after replacing the alternator. May just be coincidental. Since it's the sensor at both ends of the cat, I'm thinking that ignition is a problem. It seems to be running fine, but it's been quite a while since the plugs were changed.TLX Forums is the premier owner’s club community for everything related to the Acura TLX. Let’s chat Honda interior, mods, and more! Full Forum Listing. Explore Our Forums. Acura TLX General Discussion Forum Electronics, Audio, and Lighting 2021 + Acura TLX Forum Engine and Technical Discussion New Member Introductions.Causes Diagnosis Acura MDX P0420 Quick Info Table Acura MDX P0420 OBDII Code Defined P0420 is generic (has the same meaning for all vehicles made in 1996+) OBDII trouble code. Here's the technical definition for your vehicle: P0420: Catalyst System Efficiency Below Threshold (Bank 1) Catalyst System EfficiencyThe 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 ... Here is a quick video showing how I cleared my check engine light on my 2005 Acura RL using CataClean.Subscribe to Channel: http://bit.ly/RnWyoutubeSee our v...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 two downstream (of cat) O2 sensors indicate performance of catalytic converter. P0420 is fault for rear (bank 1) cat and your bank1 O2 voltage has numerous voltage swings. Also your scanner is likely missing some voltage swings and peak values due to long update time step. It appears to be consistent w/ P0420 code.P0420 and P0430. 2003 model. Got em both at the same time. Oddly enough right after replacing the alternator. May just be coincidental. Since it's the sensor at both ends of the cat, I'm thinking that ignition is a problem. It seems to be running fine, but it's been quite a while since the plugs were changed.Here is a tutorial on how to fix code p0420 catalyst system efficiency below threshold bank 1 how to diagnose and fix a Catalytic Converter and what to look ...I have started work with V Trans as a marketing executives with hard work dedicaticated towards sales marketing finance a/c booking delivery all other activities related too fields / office work ,have achieved my path and promoted to Branch Incharge currently on same position handling at Umargaon Branch try to give my best for future opportunities. | Learn more about S.kumar Jha's work ...P2270 is a generic OBD-II code that appears with many manufacturers. It shows that the O2 sensor signal is stuck in a lean condition. The faulty reading is coming from the second O2 sensor on bank 1. This is known as the downstream oxygen sensor. This sensor is reading too much oxygen in the exhaust.99 acura: p0420..catalyst..highway i have to pull to the side..restart I have a 99 acura 2.3cl engine light is on and it given 2 code 1-p0740- tcc circuit malfunction. 2-p0420- catalyst efficiency below thershold ( bank 1) what wrong with my car,also sometime the engine …The main difference between the Acura RDX and the Acura MDX is size. The RDX is a compact, luxury crossover SUV with seating for up to five people, and the MDX is a midsize, luxury crossover SUV that seats up to seven people.Hanuman01mdx · #2 · Mar 13, 2011. code p0420 is usually the cat but also the 02 sensor i had that code and turn out it was the cat. but i also started with the 02 first to make sure. Reply. Save. M. mantovar Discussion starter · #3 · Mar 13, 2011. P04020. After Acura delar and a private shop told me it was def the cat, because of the miles ...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 catalytic converter is the last stop for the exhaust gasses generated by the engine during …• If none of the cylinders have failed, continue troubleshooting for DTC P0420 Catalyst System Efficiency Below Threshold and do not replace the fuel injector set. END Page 10 of 10. Title: Warranty Extension: MIL Comes On With DTC P0300, P0301, P0302,P0303, P0304, P0171, P0172, P219A, P0420, or P0420 With Any of the Other Listed CodesTexasHonda · #2 · Oct 14, 2012. This code afflicts many vehicles of all brands. You have replaced O2 sensors (only the forward affects P0420). The other possibility, besides a bad converter, is an exhaust leak. If you inspect and find no exhaust leaks, the converter is likely, particularly if everything else is OK; gas mileage, …Acura RL P0420 OBDII Code Defined P0420 is generic (has the same meaning for all vehicles made in 1996+) OBDII trouble code. Here's the technical definition for your car: P0420: Catalyst System Efficiency Below Threshold (Bank 1) Catalyst System Efficiency Your RL's exhaust contains hydrocarbons, carbon monoxide, and other harmful gasses.This page is meant to help you troubleshoot the Acura CL 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. Table …Diagnose Difficulty of Inspecting Get Additional Help The P0420 code signals a low catalyst system efficiency. This code suggests that the oxygen levels are below the desired threshold (Bank 1),...Apr 5, 2013 · To diagnose a P0420 trouble code we begin by checking for exhaust leaks under the vehicle. Then use an oscilliscope to check the waveforms of both upstream and downstream O2 sensors. The front reading should vary, the rear should be steady. Replace as necessary. Check the rear Heated O2 Sensor. Check the catalytic converter, replace if necessary. 2 oct 2023 ... I have a 2008 Acura TL and it's been throwing the codes p0420 and P0430 for awhile now and I'm just wondering what could it be.In this video, we're going to show you a quick and easy way to fix your P0420 without having to replace your catalytic converter. This is a quick and easy fi...In today's video I will show you how to add a spark plug non fouler to make your computer think that the P0420 or P0430 has resolved in your car. technically this is for off-road use only. this...Current Honda vehicles 2010 Acura RDX Turbo AWD/Tech 67k miles - Daily Driver 2013 Accord EX-L I4 Auto 53k miles Black Pearl - Wife's car 2005 Acura TSX Auto 208k miles - Youngest Daughter 2013 FIT Sport Auto - 24k miles - Oldest Daughters car Former Honda Vehicles 2001 Acura MDX Totaled t223k 1991 Accord LX auto sold 185k miles 1995 GSR sold @220k miles 1991 Civic SI Crushed by a tree during ...The P0171 code indicates that the oxygen (O2) sensor on bank 1 sent a signal to the engine control module that the air-fuel mixture is too lean to be corrected. The O2 sensors have the ability to correct a fuel mixture of +-15%. If it needs to be corrected more than that, the P0171 code will be stored.P0300 Random misfire. P0301 Misfire number 1 cylinder. P0302 Misfire number 2 cylinder. P0303 Misfire number 3 cylinder. P0304 Misfire number 4 cylinder. P1399 Random misfire. Where to start to clear the code, you may just have one cylinder causing the whole cylinder to misfire. Clear the code and retest the vehicle and check for …apex adventure plex reviews P0420, O2 or Cat Acura MDX SUV Forums P0420 Acura Catalyst System Efficiency Below Threshold Bank 1 Acura TL P0496 OBDII Code ...The Chevrolet Volt and its Cruze Eco sibling present another interesting case. The Volt's 1.4-liter 4-cylinder gasoline engine has primarily a series hybrid role; on demand, the engine fires up to ...PART 1 of 2. Here we are working on a 2005 Acura MDX 3.5L with trouble codes P0175 and P0172, running rich. Find out what is causing the negative fuel trim...With the P0133 code, you know you are dealing with a fault related to the oxygen sensor on bank 1. It’s related to sensor 1. However, this same fault can occur with the other oxygen sensors. The only way to know the difference is because the code won’t be the same. Here are the two other codes that would occur on Bank 1.You also need to be careful about how you read a code. The P0420 does 'not' indicate a 'bad catalytic converter' - it indicates an issue with the catalytic converter system/process - efficiency, just as most codes indicate a problem with a function/process that may or may not be due to a particular part. There are any of a number of things that ...While this code can occur with all brands, it appears to be most common with GM vehicles. In some cases, Honda, Acura, Hyundai, Kia, and Mazda vehicles might have a slightly different meaning than the one I am describing. P0496 Trouble Code Symptoms. In many cases, the Check Engine Light is the only symptom that occurs with the P0496 …P0420 or P0430 only - Update the software, and do the cylinder AF test. If the test fails, replace the fuel injectors. NOTE: If the vehicle has a 9-speed A/T, make sure the A/T software is up to date. The A/T software may have been updated in service bulletin 19-072, MIL Comes On with DTC P0430 or P0430 with P030X, P219A, P219B (WithRelated: P0420 Acura CL. Acura CL P0401 Symptoms. Most of the time, there will not be symptoms associated with P0401 in the Acura CL. There may be a slight ping or knocking sound on rare occasions. Service Engine Soon Light– P0401 will illuminate the service engine soon light.Dec 23, 2018 · The most common fix for P0420 in the Acura MDX is a new catalytic converter, followed by an O2 sensor replacement. Before taking your MDX 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 Acura MDX: 1. Check for Other Codes. Obd2 codes hi i have a 1999 acura cl 2.3 and two codes popped up the first one is code p0172 and second is p0420 they read in that order on scanner tool. could the second code cause the first code to come on but show last or is it that the first code that shows up the cause of the second code. thank you very muchCauses Diagnosis Acura MDX P0420 Quick Info Table Acura MDX P0420 OBDII Code Defined P0420 is generic (has the same meaning for all vehicles made in 1996+) OBDII trouble code. Here's the technical definition for your vehicle: P0420: Catalyst System Efficiency Below Threshold (Bank 1) Catalyst System EfficiencyWhat is the Cost to Diagnose the Code P0430 Acura? Labor: 1.0. The cost to diagnose the P0430 Acura 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. May 31, 2023 · The P0430 trouble code is considered generic, meaning it occurs on vehicles of any type and model. The P0430 shows a problem with the emissions system. It is exactly the same as P0420 DTC, with the only difference being that that one refers to the oxygen sensors on bank 1 instead. These codes illustrate two different sides of the engine. Oct 14, 2012 · TexasHonda · #2 · Oct 14, 2012. This code afflicts many vehicles of all brands. You have replaced O2 sensors (only the forward affects P0420). The other possibility, besides a bad converter, is an exhaust leak. If you inspect and find no exhaust leaks, the converter is likely, particularly if everything else is OK; gas mileage, accleration, etc. 1) Check for an exhaust leak upstream of the secondary o2 sensor. 2) Check fuel trims to ensure that there are no gross A/F mixture issues (fouling the cat) or exhaust leak. 3) Make sure there is no TSB on P0420 for your vehicle (some Hondas had a PCM update to make the P0420 cat efficiency detection less sensitive).Code p0420 acura m'dx. 1996-newer (OBD-II) vehicles use oxygen sensors and a catalytic converter to reduce emissions. There is one O2 (oxygen) sensor in front of the catalytic converter (called upstream), and one behind it (downstream). When the engine is warmed up and running normally the upstream oxygen sensor reading fluctuates and …TexasHonda · #2 · Oct 14, 2012. This code afflicts many vehicles of all brands. You h, 13 sept 2023 ... Find out what a P0420 code means, how to diagnose this problem an, Acura Integra P0420 OBDII Code Defined P0420 is ge, =====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈==== How to Fix HONDA P, I got the P0420 engine code on my 2007 Acura MDX. What is this code and how to fix it? asked Mar 6, , Acura TSX P0420 OBDII Code Defined P0420 is generic (has the same meaning for all vehic, P2270 is a generic OBD-II code that appears with many manufacturers. It shows that the O2 sensor signal is s, Hanuman01mdx · #2 · Mar 13, 2011. code p042, A code P0420 may mean that one or more of the followin, Nov 24, 2021 · I found codes p0420, p0497, and p145c., =====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈, Code p0420 acura m'dx. 1996-newer (OBD-II) vehicles u, Once you perform a complete diagnosis of the system, you, The P0340 trouble code reveals a problem with the camsh, The MIL comes on with DTC P0420 (rear bank catalyst , If you are under 4 years/50,000 miles your emissions system i, Hello guys! I currently have a 2002 base model wit, The P0420 code indicates that the Engine Control Modul.