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›
Buick
›
2006
›
Allure CXL
›
Repair and Diagnosis
›
Engine Performance
›
System
›
Engine Control System - 3.8L - DTC P0451 To DTC P2120
›
DTC P0685
›
Repair Procedures
Repair Procedures
Clear the DTCs with a scan tool.
Turn OFF the ignition for 30 seconds.
Start the engine. If engine does not run, refer to
Engine Cranks but Does Not Run
.
If other DTCs are set, refer to
Diagnostic System Check - Vehicle
.