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Home >> Chevrolet >> 2015 >> Cruze LT, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 28 (HVAC System - Automatic) >> Diagnostic Information and Procedures >> DTC P0645, P0646, or P0647: A/C Compressor Clutch Relay >> Conditions for Setting the DTC

Conditions for Setting the DTC

WARNING: This page is about a different car, the 2015 Buick Encore. 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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