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Home >> Chrysler >> 2009 >> PT Cruiser Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 58 (DTCS P0299 To P0441) >> P0440-General EVAP System Failure >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2009 Dodge Caliber. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes 
EVAP PURGE SOLENOID VACUUM SUPPLY
EVAP SYSTEM LEAK
EVAP PURGE HOSE/TUBE OBSTRUCTION
(Z906/Z965) GROUND CIRCUIT OPEN OR HIGH RESISTANCE
(K107) ESIM SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE
EVAP PURGE SOLENOID
EVAPORATIVE SYSTEM INTEGRITY MONITOR (ESIM) SWITCH
POWERTRAIN CONTROL MODULE (PCM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See  DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure  .