Cadillac specific DTC OBD2 code: P1639 5 Volt Reference 2 Circuit
Cadillac specific DTC OBD2 code: P1657 1-4 Upshift Solenoid Control Circuit
Cadillac specific DTC OBD2 code: P1675 EVAP Vent Solenoid Control Circuit
Cadillac specific DTC OBD2 code: P1624 Customer Snapshot Data Available
Cadillac specific DTC OBD2 code: P1640 Driver 1-Input High Voltage
Cadillac specific DTC OBD2 code: P1658 Starter Enable Relay Control Circuit
Cadillac specific DTC OBD2 code: P1676 Driver 4 Line 6
Cadillac specific DTC OBD2 code: P1625 PCM System Reset
Cadillac specific DTC OBD2 code: P1641 FC Relay 1 Control Circuit
Cadillac specific DTC OBD2 code: P1660 Cooling Fans Control Circuit