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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 231 (Engine Controls - 3.9L - DTC P0442 To P2A01) >> DTC P0601-P0604, P0606, P0607, P060D, P062F or P2610 >> Circuit/System Testing >> DTC P0601, P0602, P0603, P0604, P0606, P0607, P062F and P2610

DTC P0601, P0602, P0603, P0604, P0606, P0607, P062F and P2610

WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
  1. Observe the DTCs with the scan tool.
    • If DTC P0602 is set, attempt to program the ECM before replacing the ECM.
    • If DTC P0602 resets, replace the ECM.
  2. Test the voltage and ground circuits to the control module for the following:
    • A short
    • An open
    • High resistance
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