Oldsmobile specific DTC OBD2 code: P1792 Transmission Control Module Reprogrammable Memory
Oldsmobile specific DTC OBD2 code: P1820 Internal Mode Switch Circuit A Low
Oldsmobile specific DTC OBD2 code: P1637 Generator L-Terminal Circuit
Oldsmobile specific DTC OBD2 code: P1655 EVAP Purge Solenoid Control Circuit
Oldsmobile specific DTC OBD2 code: P1673 Engine Hot Lamp Control Circuit
Oldsmobile specific DTC OBD2 code: P1638 Generator F-Terminal Circuit
Oldsmobile specific DTC OBD2 code: P1656 Driver 2 Line 6
Oldsmobile specific DTC OBD2 code: P1674 Tachometer Control Circuit
Oldsmobile specific DTC OBD2 code: P1639 5 Volt Reference 2 Circuit
Oldsmobile specific DTC OBD2 code: P1657 1-4 Upshift Solenoid Control Circuit