I HAVE P0420 AND THE ORIGINAL ECM

2001 Toyota Sienna

Tiny

Anonymous

December, 19, 2012 AT 12:59 AM

I have P0420, and the original ECM.

If I were to go to a junkyard or Pick n Pull, how would I know if the used ecm was one of the ones with the updated ones with a good program?

FOUND 143 RELATED QUESTIONS

P0420 Cat Converter

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1 Answer

Tiny

ASEMaster6371

December, 19, 2012 AT 1:01 AM

Never use a used pcm as it is flashed to another vehicle and will come up with a vin mismatch and all kinds of issues.

420 is a failed cat and needs to be replaced. Not the pcm

Roy

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