P1460 Wide open throttle A/C cutoff relay circuit

Possible causes
  • Open or shorted WAC circuit.
  • Damaged WAC relay (or CCRM).
  • Open VPWR circuit to the WAC relay.
  • Damaged PCM.
    • Symptoms
    – Engine Light ON (or Service Engine Soon Warning Light)
    P1460 Description
    Monitors the wide open throttle A/C cutoff (WAC) circuit output from the PCM. The test fails if: When the PCM grounds the WAC circuit, excessive current draw is detected on the WAC circuit; or, with the WAC circuit not grounded by the PCM, voltage is not detected on the WAC circuit (the PCM expects to detect VPWR voltage coming through the WAC relay coil to the WAC circuit).
    P1460 Information for specific makes
    P1460 ACURA
    P1460 BUICK
    P1460 CADILLAC
    P1460 CHEVROLET
    P1460 CHEVROLET
    P1460 FORD
    P1460 GMC
    P1460 GMC