Buick specific DTC OBD2 code: P1687 Driver 5 Line 7
Buick specific DTC OBD2 code: P1780 Park/Neutral Postion (PNP) Switch Circuit Engine Torque Signal Circuit
Buick specific DTC OBD2 code: P1817 TFP Valve Position Switch-Reverse With Drive Ratio
Buick specific DTC OBD2 code: P1689 Delivered Torque Circuit Fault
Buick specific DTC OBD2 code: P1790 Transmission Control Module Checksum
Buick specific DTC OBD2 code: P1818 TFP Valve Position Switch-Drive Without Drive Ratio
Buick specific DTC OBD2 code: P1690 ECM Loop Overrun
Buick specific DTC OBD2 code: P1791 Transmission Control Module Loop
Buick specific DTC OBD2 code: P1819 Internal Mode Swtich No Start, Wrong Range
Buick specific DTC OBD2 code: P1691 Coolant Gage Circuit Low Voltage