P20DC
Exhaust Aftertreatment Fuel Supply Control Stuck Closed
P20DC is an OBD-II diagnostic trouble code meaning: Exhaust Aftertreatment Fuel Supply Control Stuck Closed. Common causes: fuel valve stuck, electrical wiring problems. Estimated repair cost: $17–56.
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
Error P20DC by Vehicle Brand
FAQ
What does the P20DC code mean?
P20DC is an OBD-II diagnostic trouble code that indicates: Exhaust Aftertreatment Fuel Supply Control Stuck Closed
What causes a P20DC error code?
The most common causes of P20DC include: Fuel valve stuck; Electrical wiring problems; Control unit malfunction; Mechanical damage to the valve.
How do I fix a P20DC diagnostic trouble code?
To fix P20DC: Check the condition of the fuel supply valve. Diagnose the electrical circuit of the valve. Clean or replace valve. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P20DC?
Yes, but get it checked soon
How much does it cost to fix P20DC?
The estimated repair cost for P20DC is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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