problem code po412

2000 BUICK REGAL
120,000 MILES
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JAMES GILES
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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
Oct 4, 2012 at 1:01 AM
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DRCRANKNWRENCH
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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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Oct 4, 2012 at 1:16 AM
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DRCRANKNWRENCH
  • ✓ASE Certified Mechanic
  • 3,380 POSTS
  • ASE Certified Mechanic
Clear
Oct 26, 2012 at 9:35 AM
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