Problem code PO412

Tiny
JAMES GILES
  • 2000 BUICK REGAL
  • 120,000 MILES

How do I check for the problem code po412 and where is the location of the air injection pump relay control circuit in a 2000 Buick regal 3.8 v6

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Thursday, October 4th, 2012 AT 1:01 AM

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Tiny
DRCRANKNWRENCH
  • EXPERT
  • 3,451 POSTS

Attached are instructions for the two diagnostic codes and troubleshootting them. I have included the PCM wiring diagrams that they refer to. The diagram, 2of4, has the secondary air injection system in the top right of the diagram.

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Thursday, October 4th, 2012 AT 1:16 AM
Tiny
DRCRANKNWRENCH
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Friday, October 26th, 2012 AT 9:35 AM

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