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Home >> Chrysler >> 2011 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1664 (6.4L - DTCS P2504 To U1449 - 2500 Hd) >> DTC Troubleshooting >> P2634-Fuel Pump Control Circuit 2 High >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2017 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
(N9) FUEL PUMP 2 CONTROL CIRCUIT SHORTED TO GROUND
(N9) FUEL PUMP 2 CONTROL CIRCUIT OPEN/HIGH RESISTANCE
POWER DISTRIBUTION CENTER (PDC)
POWERTRAIN CONTROL MODULE (PCM)

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  .