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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 197 (3.7L/4.7L/5.7L - DTCS P1004 To P2172 - NGC - 1500 & 2500) >> Diagnosis And Testing >> P1457-Fuel Tank Pressure Sensor Circuit High >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2012 RAM Pickup. However, it is still accessible from the selected car via links, so may be relevant.
POSSIBLE CAUSES 
(N7) FTP SIGNAL CIRCUIT SHORTED TO VOLTAGE
(N7) FTP SIGNAL CIRCUIT OPEN
(N7) FTP SIGNAL CIRCUIT SHORTED TO THE (F856) 5-VOLT SUPPLY CIRCUIT
(K917) SENSOR GROUND CIRCUIT OPEN
FUEL TANK PRESSURE (FTP) SENSOR
POWERTRAIN CONTROL MODULE (PCM)

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