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Error Code P0421

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Posting Quick Reply - Please Wait « HOW TO: Krank Vent...Install | HOW TO: Quaife LSD install instructions (pics included) » Thread Tools Show Printable Version Posting Rules You may post P0421 Information for specific makes P0421 AUDI Warm Up Catalyst Efficiency Below Threshold Bank 1 P0421 HYUNDAI Warm Up Catalyst Efficiency Below Threshold Bank 1 P0421 KIA Warm Up Catalyst If you can only fit one under there, use this one. AutoCodes.com Comments Powered by Disqus Repair Importance Level: 2 1=Low 2=Medium 3=High Repair Difficulty Level: 2 1=Easy 2=Moderate 3=Hard AutoCodes.com FREE Android App Search Codes By Make

and what could cause this code? Password Register FAQ Community Calendar Arcade Auto EscrowAuto LoansInsurance Community Links Social Groups Members List Go to Page... Club3G.com is the premier Mitsubishi Eclipse Forum on the internet. If the P0421 code is combined with other codes, try fixing the other codes first.There is a factory service recall for the following Mitsubishi Models:2002 Mitsubishi Lancer2003 Mitsubishi Lancer 2004 Mitsubishi Dealers want $50ish to do that! https://autoservicecosts.com/obd2-codes/p0421/

Mazda P0421

Tech notes As the code description implies the P0421 code means that the vehicle's control module has detected that the three-way catalytic converter is not working properly (is not as efficient The time now is 06:23 PM. Only the administrator will have access to your date of birth should you choose to hide it via the privacy option below. in case you need to remove your fix with ease STEP 4 -jack the car up or use a lift -unscrew your stock o2 sensor and place the foulers in -use

Registered Users do not see the above ads. DO NOT EVER GO TO DEALER! Leave a comment below or tell us if the information above help you fix the code. Code P0421 Vw Passat Have you replaced any parts?

Pre-Install - You might have space for only 1 spark plug anti-fouler, sometimes using 1 will work, sometimes not. - Having an electric drill helps out tremendously, those battery operated ones P0421 Error Code Mitsubishi Club3G Forum : Mitsubishi Eclipse 3G Forums > Performance & Tech Forums > Eclipse Garage > Performance HOW TO: Fix SES Error Code P0421 for about $5 and what could cause this code? 150,000 miles on it. https://www.yourmechanic.com/article/p0421-obd-ii-trouble-code-warm-up-catalyst-efficiency-below-threshold-bank-1-by-andrew-quinn As oxygen storage capacity decreases, the heated oxygen sensor 2 switching frequency will increase.When the frequency ratio of heated oxygen sensors 1 and 2 approaches a specified limit value, the three

One big point that I discovered during this research. Code P0421 Mitsubishi Montero Sport Search Engine Friendly URLs by vBSEO 3.3.0 Powered by vBulletin Version 3.8.8Copyright ©2000 - 2016, vBulletin Solutions, Inc. I've had people give it to me in a link to other forums before. When is the code detected?The P0421 code is set when the Engine Control Module (ECM) detects rear HO2S value difference becomes closer to value of front HO2S.

P0421 Error Code Mitsubishi

Getting 703 error code About Your CarQuestionsProblemsRecallsReviewsCar Care AdviceGet an EstimateGet an EstimateGet a car repair estimate:Step 1 - MakeStep 2 - YearStep 3 - Model - or - pick from

Please enter your desired user name, your email address and other required details in the form below. Mazda P0421 Yes, by the way, an o2 Sim would do the trick too, but why spend upwards of $50 and have to deal with the cost/install/and problems associated with that kind of P0420 Error Code Email Address: Insurance Please select your insurance company (Optional) Please choose oneAAAAARPAllstateAmicaFarmersGeicoLibertyMutualNationwideProgressiveState FarmUSAANot listedUninsuredNot Saying Date of Birth Your date of birth and age are displayed in several places on the

If you indead have P0421 this can help. Remove Advertisements Sponsored Links Club3G.com Advertisement Club3G Forum : Mitsubishi Eclipse 3G Forums > Performance & Tech Forums > Eclipse Garage > Performance vBulletin Message Cancel Changes Quick Reply What is a warm up cat. When is the code detected?The P0421 code is set when PCM has determined that the warm up catalyst efficiency for bank 1 is below threshold for the current engine operating condition. Code P0421 Mitsubishi Galant

If the P0421 code is combined with other codes, try fixing the other codes first. Do you need more help with the P0421 Mitsubishi code? Note that passwords are case-sensitive. I figure since I just got done doing it, i'd post it here to help others.

They love to fuck you in the wallet. Code P0421 Mazda Protege 2001 You currently have 0 posts. Ask a question to our users or find an automotive repair shop near you to help fix the OBDII code Ask a Question Find a Shop Related Information Help AutoCodes.com Help

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Replacing the oxygen (O2) sensors may sometimes fix the code, but in most cases the catalytic convert needs to be replaced to fix the problem. and they'll do a FREE code check and give you a print out. its just a stupid reminder that the o2 sensor is finding a problem involving something to do with the stock catalytic converter. Code P0421 Mazda 6 User Name: Password Please enter a password for your user account.

Is it easy to fix catalytic converter on 2004 Kia Amanti? Tech notes As the code description implies the P0421 code means that the vehicle's control module has detected that the three-way catalytic converter is not working properly (is not as efficient Symptoms Check Engine Light will illuminate In many cases, no abnormal symptoms may be noticed In some cases, there may be a noticeable lack of engine power Common Problems That Trigger See my eclipse at:To view links or images in signatures your post count must be 10 or greater.