Pontiac specific DTC OBD2 code: P1621 PCM Memory Performance
Pontiac specific DTC OBD2 code: P1622 Cylinder Select
Pontiac specific DTC OBD2 code: P1623 Transmission Temp Pull-Up Resistor
Pontiac specific DTC OBD2 code: P1624 Customer Snapshot Data Available
Pontiac specific DTC OBD2 code: P1625 PCM System Reset
Pontiac specific DTC OBD2 code: P1626 Theft Deterrent Fuel Enable Signal Lost
Pontiac specific DTC OBD2 code: P1627 A/D Performance
Pontiac specific DTC OBD2 code: P1628 ECT Pull-Up Resistor
Pontiac specific DTC OBD2 code: P1629 Theft Deterrent System-Cranking Signal
Pontiac specific DTC OBD2 code: P1630 Theft Deterrent Learn Mode Active