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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 419 (5.7L CNG - DTCS P2135 To U147B - 2500 Hd) >> Diagnosis And Testing >> P22F1-Cylinder 7 Alternative Fuel Injector Control Circuit/Open >> 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 
FUEL INJECTOR CONTROL CIRCUIT OPEN/HIGH RESISTANCE
FUEL INJECTOR CONTROL CIRCUIT SHORTED TO GROUND
CNG FUEL INJECTOR
POWERTRAIN CONTROL MODULE

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