P20D6
Exhaust Aftertreatment Fuel Injector B Stuck Closed
P20D6 is an OBD-II diagnostic trouble code meaning: Exhaust Aftertreatment Fuel Injector B Stuck Closed. Common causes: dirty or clogged nozzle, mechanical damage to the injector. Estimated repair cost: $33–167.
Symptoms
- Increase in harmful emissions
- Check Engine light comes on
- Reduced efficiency of the exhaust gas cleaning system
- Problems with diesel particulate filter regeneration
- Possible errors related to the exhaust gas cleaning system
Causes
- Dirty or clogged nozzle
- Mechanical damage to the injector
- Problems with the injector electrical circuit
- Engine control unit malfunction
- Low fuel quality
How to Fix
- Check the electrical circuit of the injector for opens and shorts
- Check injector resistance
- Clean or replace fuel injector B
- Check the operation of the engine control unit
- Use quality fuel
Related codes
Error P20D6 by Vehicle Brand
FAQ
What does the P20D6 code mean?
P20D6 is an OBD-II diagnostic trouble code that indicates: Exhaust Aftertreatment Fuel Injector B Stuck Closed
What causes a P20D6 error code?
The most common causes of P20D6 include: Dirty or clogged nozzle; Mechanical damage to the injector; Problems with the injector electrical circuit; Engine control unit malfunction.
How do I fix a P20D6 diagnostic trouble code?
To fix P20D6: Check the electrical circuit of the injector for opens and shorts. Check injector resistance. Clean or replace fuel injector B. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P20D6?
Yes, but get it checked soon
How much does it cost to fix P20D6?
The estimated repair cost for P20D6 is $33–167. Actual cost depends on your vehicle, location, and labor rates.
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