P1384 Buick VVT Solenoid A Malfunction

P1385 Buick Variable Cam Timing Solenoid B Malfunction

Possible causes
  • Open or short in the VCT circuit.
  • Open VPWR circuit.
  • Damaged PCM.
  • Open or short in the VCT solenoid valve.
    • Symptoms
    – Engine Light ON (or Service Engine Soon Warning Light)
    P1385 Buick Description

    The comprehensive component monitor (CCM) monitors the VCT circuit to the PCM for high and low voltage. If the voltage falls below a calibrated limit a calibrated amount of time during testing, the test fails.

    Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick Regal – Buick Verano – Buick Enclave – Buick Encore – Buick Rainier – Buick Rendezvous – Buick Terraza – Buick Riviera