WHAT IS OBD II CODE P1406 AND HOW CAN I FIX IT?

  • Tiny
  • Nate_81
  • 1996 Pontiac Grand Am
  • 184,500 miles

I just bought a1996 Pontiac Grand Am Gt with the 3100 V6. It has a few problems that I can fix that are easy, but and thankfully it only has one code coming up and that is P1406. I have tried to look up this code but I am getting no were quick. Can you help me figure out what this is and how I might be able to fix the problem. Thank you

Tuesday, February 28th, 2012 AT 1:02 AM

1 Answer

  • Tiny
  • billymac
  • Expert
  • 2,240 posts

P1406 Heated Catalyst Internal Control Module Checksum/ROM Error
this is a code for ecm computer internal failure

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Tuesday, February 28th, 2012 AT 1:19 AM

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