P20D2
Exhaust Aftertreatment Fuel Injector B Control Performance
P20D2 is an OBD-II diagnostic trouble code meaning: Exhaust Aftertreatment Fuel Injector B Control Performance. Common causes: cleaning system nozzle clogged, open or short circuit in control circuit. Estimated repair cost: $50–133.
Symptoms
- Check Engine light comes on
- Engine performance deterioration
- Increased emissions
- Unsuccessful attempts to regenerate the diesel particulate filter
- Noticeable increase in fuel consumption
Causes
- Cleaning system nozzle clogged
- Open or short circuit in control circuit
- Faulty injector solenoid valve
- Problems with the engine control unit
- Mechanical damage to the injector
How to Fix
- Check the electrical circuit of the injector for opens and shorts
- Clean or replace the cleaning system nozzle
- Check the functionality of the solenoid valve
- Test the engine control unit
- Reset errors and test drive
Related codes
Error P20D2 by Vehicle Brand
FAQ
What does the P20D2 code mean?
P20D2 is an OBD-II diagnostic trouble code that indicates: Exhaust Aftertreatment Fuel Injector B Control Performance
What causes a P20D2 error code?
The most common causes of P20D2 include: Cleaning system nozzle clogged; Open or short circuit in control circuit; Faulty injector solenoid valve; Problems with the engine control unit.
How do I fix a P20D2 diagnostic trouble code?
To fix P20D2: Check the electrical circuit of the injector for opens and shorts. Clean or replace the cleaning system nozzle. Check the functionality of the solenoid valve. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P20D2?
Do not drive — repair immediately
How much does it cost to fix P20D2?
The estimated repair cost for P20D2 is $50–133. Actual cost depends on your vehicle, location, and labor rates.
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