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Home >> Dodge and Ram >> 2007 >> Caliber R/T, FWD, Standard >> Repair and Diagnosis >> Engine Performance >> System >> DTCS P0617 To P1128 >> P0645-A/C Compressor Relay Open Circuit >> Possible Causes

Possible Causes

Possible Causes 
INTERMITTENT DTC
(C27) A/C COMPRESSOR CONTROL CIRCUIT SHORTED TO VOLTAGE
(C27) A/C COMPRESSOR CONTROL CIRCUIT SHORTED TO GROUND
(C27) A/C COMPRESSOR CONTROL CIRCUIT OPEN OR HIGH RESISTANCE
(Z916) GROUND CIRCUIT OPEN OR HIGH RESISTANCE
A/C COMPRESSOR
POWERTRAIN CONTROL MODULE (PCM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  .  

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