Generic
Type:
    Powertrain - Auxiliary Emission Controls - ISO/SAE Controlled
Description:
    Evaporative Emission System Pressure Sensor/Switch Range/Performance

GM
Type:
    Powertrain - Auxiliary Emission Controls - ISO/SAE Controlled
Description:
    EVAP System Pressure Sensor Circuit Conditions
Cause:
    Engine running at idle speed for at least 2 minutes, ECT sensor input from 158-230°F, IAT input from 14-122°F, BARO input more than 75 kPa, fuel tank level 25-75%, fuel tank pressure lower than a specified value after the completion of the EVAP system leakage check, then the PCM detected a fuel tank pressure that was lower than a specified value after completion of the EVAP leak check.