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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 416 (5.7L CNG - DTCS P000B To P0203 - 2500 Hd) >> Diagnosis And Testing >> P01B7-Alternative Fuel Rail Temperature Sensor Circuit High >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2013 RAM 2500 HD and 2012 RAM Pickup. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes 
CNG RAIL TEMPERATURE SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE
CNG RAIL TEMPERATURE SENSOR SIGNAL CIRCUIT OPEN/HIGH RESISTANCE
CNG RAIL SENSOR RETURN CIRCUIT OPEN/HIGH RESISTANCE
CNG RAIL SENSOR
POWERTRAIN CONTROL MODULE

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  STANDARD PROCEDURE