Reset Check Engine Light?

2003 TOYOTA COROLLA
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NIR
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Hello.

I had "check engine" light on with diagnostics code p0420, replaced the catalytic converter, but the Check engine light is still ON.
How do I reset it?

Thanks.
Aug 18, 2008 at 3:40 AM
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MHPAUTOS
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Hi there,

THis video will show you how to clear the codes

https://youtu.be/ahK_eucFi-k

Mark (mhpautos)
Apr 28, 2020 at 11:21 AM
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MTMOTORIST
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I have 1999 TOYOTA COROLLA 2 month ago I got P 0466 fail code then I change Charcoal Canister Then reset ECM CHECK ENGINE light became off.But now i cannot pass smog check because too hi CO.. I already change spark plugs injectors-nothing changes.. Car runs good ,doesn,t eat gas, CHECK ENGINE off-no one can tell me exactly what else am i supposed to change?????
Aug 9, 2020 at 12:00 PM (Merged)
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RASMATAZ
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Could be one of the following the coolant temperature sensor,oxygen sensor, leaking injector/s and fuel pressure regulator,excessive fuel pressure and restricted air intake
Aug 9, 2020 at 12:00 PM (Merged)