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Home › Chevrolet › 2012 › Camaro ZL1, Automatic Trans › Repair and Diagnosis › Engine Performance › System › Engine Controls/Fuel - 6.2L - DTC P0010 To DTC P0340 › Diagnostic Information and Procedures › DTC P012B › Circuit/System Testing

Circuit/System Testing

NOTE:

You must perform Circuit/System Verification before proceeding with the Circuit/System Testing.

  1. Verify none of the conditions listed below exist:
    • Loose clamps, cracks, or other damage in the air intake duct system
    • Collapsed or restricted air intake duct system
    • Restricted air filter
    • Splits, kinks or improper connections at the vacuum hoses
    • Missing, restricted or leaking exhaust components-Refer to Symptoms - Engine Mechanical .
    • Vacuum leaks at the intake manifold and Q38 throttle body
    • If a condition exists, repair as necessary. 
    • If none of the conditions exist. 
  2. Verify none of the conditions listed below exist with the supercharger system:
    • A binding or restricted Q36 supercharger bypass solenoid valve, linkage or actuator. Refer to Supercharger Cleaning and Inspection
    • Any damaged components
    • Loose or improper installation of any components
    • An air flow restriction
    • Any vacuum leaks
    • Water intrusion
    • Contamination or debris blocking or restricting the B105 supercharger inlet pressure sensor port
    • If a condition exists, repair as necessary. 
    • If none of the conditions exist. 
  3. Test or replace the B105 supercharger inlet pressure sensor.
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