P20FF

Reductant Control Module Performance

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–278 (est.)

Symptoms

Check Engine light comes on
Reduced engine power
Increased AdBlue urea consumption
SCR error message appears
Unstable engine idling

Causes

Reducer control module malfunction
Clogged urea injection nozzle
Problems with module wiring or connectors
Poor quality or freezing of the AdBlue reductant
Failures in the control unit software

How to Fix

Diagnostics of the reducer control module
Checking and cleaning the urea injection nozzle
Testing electrical wiring and connectors
Replacing low-quality or frozen AdBlue
Engine control unit software update

Related codes

P20EE P20FD P2201