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Home >> Jeep >> 2014 >> Wrangler Sahara, Standard Trans >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> 3.6L - DTCS P0157 To P0457 >> Diagnosis And Testing >> P0441-EVAP Purge System Performance >> Possible Causes

Possible Causes

Possible Causes
FUEL TANK PRESSURE (FTP) SENSOR 5-VOLT SUPPLY OPEN CIRCUIT OR EXCESSIVE RESISTANCE
EVAP PURGE SOLENOID VACUUM SUPPLY
EVAP PURGE SOLENOID VACUUM SUPPLY
EVAPORATIVE PURGE HOSE/TUBE AND FRESH AIR FILTER OBSTRUCTION
EVAP PURGE SOLENOID
FUEL TANK PRESSURE SENSOR
OBSTRUCTED ESIM FRESH AIR FILTER
OBSTRUCTED LINE BETWEEN THE FUEL TANK AND CANISTER
POWERTRAIN CONTROL MODULE (PCM)

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