Possible Causes

DTC is detected when an excessively high voltage from EVAP control system pressure sensor is sent to ECM. Possible causes are:

• EVAP control system pressure sensor circuit is open or shorted.
• Faulty EVAP control system pressure sensor.
• Faulty EVAP canister vent control valve.
• Faulty EVAP canister.
• Faulty rubber hose from EVAP canister vent control valve to vehicle frame.