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Home >> Buick >> 2019 >> Regal TourX Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 139 (Engine Controls And Fuel - 3.6L (LGX) - Diagnostic Information And Procedures (P0449-P3436) And Symptoms) >> Diagnostic Information and Procedures >> DTC P0685-P0687, P0689, P0690, P1682, P16A7, P16AF, or P16B3 >> Diagnostic Fault Information

Diagnostic Fault Information

WARNING: This page is about a different car, the 2020 Buick Regal and 2019 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
B+ - Relay Coil P0689, P1682 P0685, P0689, P1682, P16A7, P16AF - -
B+ - Relay Switch P0689, P1682 P0685, P0689, P1682, P16A7, P16AF - -
Ignition - Component - Terminal 30 P0689, P1682 P0685, P0689, P1682, P16A7, P16AF P0690, P16B3, P16BF -
Control - Relay Coil P0686, P0690 P0685, P0689, P1682, P16A7, P16AF P0685, P0687, P0689, P1682* -
*Internal control module or component damage may occur if the circuit shorts to B+.