Chevrolet specific DTC OBD2 code: P1664 1-4 Upshift Lamp Control Circuit
Chevrolet specific DTC OBD2 code: P1663 Oil Life Lamp Control Circuit
Chevrolet specific DTC OBD2 code: P1662 Cruise Control Inhibit Control Circuit
Chevrolet specific DTC OBD2 code: P1661 MIL Control Circuit
Chevrolet specific DTC OBD2 code: P1660 Cooling Fans Control Circuit
Chevrolet specific DTC OBD2 code: P1658 Starter Enable Relay Control Circuit
Chevrolet specific DTC OBD2 code: P1657 1-4 Upshift Solenoid Control Circuit
Chevrolet specific DTC OBD2 code: P1656 Driver 2 Line 6
Chevrolet specific DTC OBD2 code: P1655 EVAP Purge Solenoid Control Circuit
Chevrolet specific DTC OBD2 code: P1654 Service Throttle Soon Lamp Control Circuit