Oldsmobile specific DTC OBD2 code: P1801 Performance Selector Switch Failure
Oldsmobile specific DTC OBD2 code: P1826 Internal Mode Switch Circuit C High
Oldsmobile specific DTC OBD2 code: P1641 FC Relay 1 Control Circuit
Oldsmobile specific DTC OBD2 code: P1660 Cooling Fans Control Circuit
Oldsmobile specific DTC OBD2 code: P1677 Driver 4 Line 7
Oldsmobile specific DTC OBD2 code: P1642 FC Relay 2 And 3 Control Circuit
Oldsmobile specific DTC OBD2 code: P1661 MIL Control Circuit
Oldsmobile specific DTC OBD2 code: P1680 Driver 5
Oldsmobile specific DTC OBD2 code: P1643 Engine Speed Output Circuit
Oldsmobile specific DTC OBD2 code: P1662 Cruise Control Inhibit Control Circuit