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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 >> P20BB-REDUCTANT Heater "A" Control Circuit Low >> Set Condition

Set Condition

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.

The DEF Dosing Control Unit detects that the DEF Pressure Line heater circuit voltage is below a calibrated threshold.