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Home >> Chevrolet >> 2010 >> Traverse LT, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 472 (HVAC System - Automatic) >> Diagnostic Information and Procedures >> DTC P0645, P0646, or P0647: Air Conditioning (A/C) Compressor Clutch Relay >> Conditions for Setting the DTC

Conditions for Setting the DTC

WARNING: This page is about a different car, the 2016 GMC Acadia, 2016 Chevrolet Traverse, and 2016 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.

P0645 or P0646 

The ECM detects a short to ground or an open at the A/C compressor clutch relay control circuit.

P0647 

The ECM detects a short to voltage at the A/C compressor clutch relay control circuit.

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