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Home >> Chevrolet >> 2013 >> Tahoe LS, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 2022 (Engine Controls/Fuel - 5.3L, 6.0L, 6.2L - DTC P0442 To DTC P3449 And Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P0641 or P0651 (ECM) >> Circuit/System Verification

Circuit/System Verification

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  1. Ignition ON, observe the DTC information with a scan tool. DTC P0641 and P0651 should not set.
  2. Observe the scan tool 5 V Reference 1 Circuit Status and the 5 V Reference 2 Circuit Status parameters. Each parameter should display OK.
  3. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
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