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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 418 (5.7L CNG - DTCS P060B To P2128 - 2500 Hd) >> Diagnosis And Testing >> P1199-Alternative Fuel Injector Power Relay Control Circuit Performance >> 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 INJECTOR RELAY CONTROL CIRCUIT SHORTED TO GROUND
CNG INJECTOR RELAY CONTROL CIRCUIT OPEN/HIGH RESISTANCE
OPEN CIRCUIT ON ANY OF THE FUEL INJECTOR CONTROL CIRCUITS
CNG INJECTOR RELAY
POWERTRAIN CONTROL MODULE

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