P20FB

Reductant Pump B Control Performance/Stuck Off

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine Light Is On
Reduced engine power
Increased fuel consumption
SCR System Error Message
Increased NOx emissions

Causes

Reagent pump jammed
Open or short circuit in the pump circuit
Faulty relay or pump control unit
Pump is dirty or clogged
Low level or poor quality reagent

How to Fix

Check the level and quality of the reagent (AdBlue)
Diagnose the electrical circuit of the pump
Check the functionality of the reagent pump
Clean or replace the pump if necessary
Reset the error code and check the system

Related codes

P20FA P20FC P20FD