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Home >> Buick >> 2007 >> Allure CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 69 (Engine Control System & Fuel System - 5.3L - DTC P0420 To DTC P3449) >> DTC P0685, P0689, or P0690 >> DTC Descriptors

DTC Descriptors

WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
DTC P0685

Engine Controls Ignition Relay Control Circuit

DTC P0689

Engine Controls Relay Feedback Circuit Low Voltage

DTC P0690

Engine Controls Relay Feedback Circuit High Voltage

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