P203F

Reductant Level Too Low

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$6–22 (est.)

Symptoms

Check Engine light comes on
Reduced engine power
Increased fuel consumption
Dashboard message indicating low reagent level
Possible transition to emergency mode

Causes

Low level of AdBlue reagent in the tank
Reagent level sensor malfunction
Level sensor wiring problems
SCR control module malfunction
Leak in the reagent supply system

How to Fix

Check the AdBlue level and top up if necessary.
Check the reagent level sensor for malfunctions
Check the integrity of the wiring to the level sensor
Diagnose the SCR control module
Check the system for reagent leaks

Related codes

P203E P204F P205F