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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1574 (6.7L Diesel - DTCS P20B7 To P24A0 - 2500 Hd) >> DTC Troubleshooting >> P20B7-(Diesel Exhaust Fluid) REDUCTANT Pump Heater Control Circuit Low >> 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
SCR MODULE HEATER SUPPLY CIRCUIT SHORTED TO GROUND
SCR MODULE HEATER SUPPLY CIRCUIT OPEN/HIGH RESISTANCE
DEF DOSING CONTROL UNIT
POWER DISTRIBUTION CENTER

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  . 

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