Is it normal for the code to come back right away?When I drive about 15-20 miles the check engine light come back on.I can monitor the 02 sensors. Want Answer 0. After the tests you may indeed discover that the catalytic converter is bad. This expert is wonderful. Thank you so much for taking your time and knowledge to support my concerns. if it continues to set I would ask GM about the reflash for p0420 after changing converter. I’ll ask about that.My 2014 cruze had the same code. Catalytic converter replacement: On most cars, unless the engine is running poorly when this code sets, the problem is emission rather than performance related.
I changed the Cat but the code comes back. What is the severity of a P0420 code? I took it to my mechanic and they confirmed my fear.
The scan tool P0420 - Catalyst System Low Efficiency. is it setting any current or pending codes? Chevrolet; Cruze; 2011 Chevrolet Cruze; P0420 code circuit; Share on Facebook; Share on Twitter; Share on Google+; Share on Pinterest; Share by Email × Question about 2011 Chevrolet Cruze. Please help!
14 years experience.ASE Master Certification. The most common problem is far and away the first one listed below.
Chevrolet OBDII P0420 is often caused by a bad oxygen sensor, but there can be other causes as well.
Chevy Cruze P0442 Causes. Ask a Chevy Mechanic for Answers ASAPHello I'm Paul and I will help you with your question.Out of 21 cases of p0420 on the 2013 Cruze 20 were a bad Catalytic converter and only 1 was an oxygen sensor.It's pretty rare that a sensor alone causes p0420. I stopped at an AutoZone and they read the code P0420. A week ago the engine light came on in my 2011 6spd Eco Cruze.
Is there a way to clear the permanent codes?I used my scan tool.
Try clearing again yourself and perform drive cycle and see if it returns.all you need to check for is that the rear o2 sensor downstream is steady and not jumping up and down usually its somewhere around .4More import that the front fluctuates between .2-.8 and rear is steady between .4-.5 area usuallythe steadiness of rear is key as it should not go back and forth like the front the voltage is not as important as the steadiness this is how it determines catalytic efficiencyyou should be able to attach a video using the paperclip icon above chat.or you can upload to google drive or icloud and share link.it seems a little rich but its not fluctuating too much which is good. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc. It erases the check for emissions. Submit Answer Ask a Question About VehicleHistory.com VehicleHistory.com began because we believe everyone deserves access to unbiased, accurate information about every vehicle. Did they also do the latest re flash? It’s entirely possible that it was damaged during/after. Is this normal? Thank you so much!!! This page is meant to define the symptoms of the Chevy P0420 trouble code. Chevrolet codes P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308, P0174, and P0171 can give false data readings that create conditions which trigger code P0420. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.I couldn't be more satisfied! Good morning, I have a 2013 Cruze and it shows two codes P069E & P059E. There is an extension that you can buy that will take your downstream O2 sensor out of the exhaust stream. Code P0420 Catalytic Converter 2013 Chevy Cruze Lt 1.4L March 12, 2020 Bdock6239 Off Auto Repair Questions , Chevy , Hello, I have the p4020 code on my code reader so I’m going to change the catalytic converter but I’m kind of confused and I don’t know anything about cars. After about 25 miles of driving light came back on. Got it back again today and after about 25 miles the engine light is on again. If there are any inaccuracies, or anything that you feel could improve the article, please feel free to comment or message. the code is staying in there and not clearing until the computer determine the repair is valid.it's not letting you clear the permanent code until the computer itself determines it is repaired.Try the generic drive cycle I recommended I also found another bit of information on getting monitors ready see below.To better understand the permanent DTC see this webpage and scroll to Permanent DTCI thought you mentioned the permanent code is not triggering the engine light? I am attaching the testing information along with confirmed repairs below.Follow steps in above link and suspect a bad catalytic converter. aside from the home fix the only other advise I could give you is a putting a factory converter in it.I was having a terrible problem with the wheel bearings on my 98 Chevy Cavalier and I suspect that using this website saved me plenty of time and money.
If it is the O2, which one is it or how can I determine, thanks!well the Maf or vaf code does not drop any more, but the P0420 continues to drop after a day of regular driving.. As i mentioned before I changed the MAF, the cat is a year old this august, and i just1996 chevy suburban 2500 350 motor what gives the oxygen sensor bank 2 sensor 2 its voltage currently at .030-.060 currently the egr valve has resistance on terminal 1,5 but not 2,4 would this cause tMY 1997 CHEVY SILERADO (5.7) AUTOMATIC RUNS VERY ROUGH. We took it in for emissions and we got rejected for "System Not Ready". I dropped it off with my mechanic again.
All equipped with 1.4L engine.
P0420 2016 Chevy Cruze.