P20F6
Reductant Injection Valve Stuck Open Bank 1 Unit 1
P20F6 is an OBD-II diagnostic trouble code meaning: Reductant Injection Valve Stuck Open Bank 1 Unit 1. Common causes: mechanical jamming of the reducer valve, contamination or crystallization of the reductant in the valve. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- Reduced engine power
- Increased consumption of reductant (AdBlue)
- Unpleasant smell from the exhaust system
- Possible SCR error messages on the dashboard
Causes
- Mechanical jamming of the reducer valve
- Contamination or crystallization of the reductant in the valve
- Malfunction of the solenoid part of the valve
- Problems with valve wiring or connectors
- SCR control module malfunction
How to Fix
- Diagnostics of the reductant injection valve
- Cleaning or replacing the pressure reducer valve
- Checking the condition of the reductant (AdBlue)
- Checking the integrity of wiring and connectors
- Reset error and test drive
Related codes
Error P20F6 by Vehicle Brand
FAQ
What does the P20F6 code mean?
P20F6 is an OBD-II diagnostic trouble code that indicates: Reductant Injection Valve Stuck Open Bank 1 Unit 1
What causes a P20F6 error code?
The most common causes of P20F6 include: Mechanical jamming of the reducer valve; Contamination or crystallization of the reductant in the valve; Malfunction of the solenoid part of the valve; Problems with valve wiring or connectors.
How do I fix a P20F6 diagnostic trouble code?
To fix P20F6: Diagnostics of the reductant injection valve. Cleaning or replacing the pressure reducer valve. Checking the condition of the reductant (AdBlue). For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P20F6?
Limited driving only, diagnose soon
How much does it cost to fix P20F6?
The estimated repair cost for P20F6 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat