P20DC

Exhaust Aftertreatment Fuel Supply Control Stuck Closed

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

Increased fuel consumption
Check Engine Light Illuminates
Reduced engine power
Problems with passing technical inspection
Unpleasant smell from the exhaust system

Causes

Fuel valve stuck
Electrical wiring problems
Control unit malfunction
Mechanical damage to the valve
Fuel system contamination

How to Fix

Check the condition of the fuel supply valve
Diagnose the electrical circuit of the valve
Clean or replace valve
Check the operation of the control unit
Test the system after repair

Related codes

P20DD P20DE P20DF