P20F5

Reductant Consumption Too High

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–222 (est.)

Symptoms

Increased AdBlue consumption
Check Engine Light Illuminates
Reduced engine power
SCR fault message appears
Possible ammonia odor

Causes

AdBlue reagent leak
Malfunction of the SCR pump or injector
NOx sensors are dirty or damaged
ECU software error
Damaged or clogged SCR catalytic converter

How to Fix

Check the system for AdBlue leaks
Diagnose the SCR pump and injector
Check NOx sensors and their wiring
Update ECU firmware if necessary
Check the condition of the SCR catalytic converter

Related codes

P20EE P20F0 P2201