PROBLEM CODE PO412

2000 Buick Regal

Tiny

james giles

October, 4, 2012 AT 1:01 AM

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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2 Answers

Tiny

DrCranknWrench

October, 4, 2012 AT 1:16 AM

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.

Tiny

DrCranknWrench

October, 26, 2012 AT 9:35 AM

Clear

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