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Home >> Jeep >> 2008 >> Compass Limited, FWD, Automatic CVT >> Repair and Diagnosis >> Engine Performance >> System >> DTCS P0354 To P0507 >> P0440-General EVAP System Failure >> Possible Causes
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Possible Causes

Possible Causes 
INTERMITTENT DTC
EVAP PURGE SOLENOID VACUUM SUPPLY
EVAP SYSTEM LEAK
EVAP PURGE HOSE/TUBE OBSTRUCTION
(Z914) GROUND CIRCUIT OPEN OR HIGH RESISTANCE
(K107) ESM SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE
EVAP PURGE SOLENOID
EVAPORATIVE SYSTEM MONITOR SWITCH
POWERTRAIN CONTROL MODULE (PCM)

Perform PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .