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Home >> Chevrolet >> 2011 >> Chevy Express G2500, Van Cargo Extended, 6.6 L >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 6.6L (LGH) - DTC P0016 Through DTC P11DC >> Diagnostic Information and Procedures >> DTC P040F >> Testing >> Circuit/System Verification

Circuit/System Verification

NOTE:

The ignition must be OFF for at least 8 hours prior to starting this procedure.

  1. Ignition ON, observe the scan tool EGR Cooler Temp. Sen. 1, EGR Cooler Temp. Sen. 2 and ECT parameters. The EGR Cooler Temp. Sen. 1 and EGR Cooler Temp. Sen. 2 parameters should be within 20°C (36°F) of each other and the ECT parameter.
  2. 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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