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Home >> Chevrolet >> 2006 >> Cobalt LTZ >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 13 (Engine Controls - 2.0L - DTC P0351 To DTC P2138) >> Diagnostic Information & Procedures >> DTC P0641 or P0651 >> Circuit/System Verification

Circuit/System Verification

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P0641 

With the ignition ON and the engine OFF, observe the MAP sensor voltage parameter with a scan tool. The scan tool should display 3.6-4.8 volts for a normally operating system.

P0651 

With the ignition ON and the engine OFF, observe the APP sensor 1 voltage parameter with a scan tool. The scan tool should display 0.3-0.6 volt for a normally operating system.

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