Help!!!!!!!!!! How do I get my check engine light off?

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Jul 25, 2011 | 12:01 AM

#21

oh3monteSS

Joined: Aug 2010

Posts: 353

From: Illinois

I'm having this same issue now too

It won't go away! My car's an 03 what can I do to make the light go off and STAY off??

Jul 25, 2011 | 08:01 AM

#22

ChibiBlackSheep

Monte Of The Month -- August 2014

Joined: Sep 2008

Posts: 25,145

From: Southeast PA

This thread is 3 years old. What's your issue?

Jul 25, 2011 | 10:14 AM

#23

oh3monteSS

Joined: Aug 2010

Posts: 353

From: Illinois

I replaced my cat with a magnaflow one and now the check engine light will not go off. I can have it shut off but it just keeps coming back on every day or 2 and then stays on till I shut it off... What can I do to make it stay off for good?

Last edited by oh3monteSS; Jul 25, 2011 at 10:50 AM.

Jul 25, 2011 | 10:58 AM

#24

ChibiBlackSheep

Monte Of The Month -- August 2014

Joined: Sep 2008

Posts: 25,145

From: Southeast PA

Going to probably need to get the code P0420 tuned out of your PCM, or start researching how to make an 02 sensor fake.

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