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Home >> Jeep >> 2025 >> Compass Trailhawk >> Repair and Diagnosis >> Engine Performance >> System >> 2.0L - DTCS P0633 To P0698 >> DTC Troubleshooting >> P0645 A/C Control Circuit/Open >> Possible Causes

Possible Causes

Possible Causes
A/C COMPRESSOR CONTROL CIRCUIT SHORTED TO VOLTAGE
A/C COMPRESSOR CONTROL CIRCUIT SHORTED TO GROUND
A/C COMPRESSOR CONTROL CIRCUIT OPEN OR HIGH RESISTANCE
POWER DISTRIBUTION CENTER (PDC)
POWERTRAIN CONTROL MODULE (PCM)

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to:  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  .