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Home >> Chrysler >> 2011 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 509 (3.6L - DTCS P0645 To P2138) >> Diagnosis And Testing >> P1457-Fuel Tank Pressure Sensor Circuit High >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2013 Dodge Avenger and 2013 Chrysler 200. 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  STANDARD PROCEDURE  .