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I have P0420, and the original ECM

Tiny
ANONYMOUS
  • MEMBER
  • 2001 TOYOTA SIENNA
  • 270,000 MILES
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?
Wednesday, December 19th, 2012 AT 12:59 AM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
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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Wednesday, December 19th, 2012 AT 1:01 AM

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