P20A1
Reductant Purge Control Valve A Performance
P20A1 is an OBD-II diagnostic trouble code meaning: Reductant Purge Control Valve A Performance. Common causes: reagent purge valve jammed, open or short circuit in control circuit. Estimated repair cost: $28–89.
Symptoms
- Check Engine light comes on
- Increased reagent consumption (AdBlue)
- Reduced engine power
- Increased NOx emissions
- Possible SCR error messages on the dashboard
Causes
- Reagent purge valve jammed
- Open or short circuit in control circuit
- Valve contamination
- Poor quality or freezing of the reagent
- Problems with the SCR control unit
How to Fix
- Check the condition and cleanliness of the valve
- Check the valve control circuit for opens and shorts
- Check valve coil resistance
- Replace reagent purge valve if necessary
- Check the quality and level of the reagent in the tank
Related codes
Error P20A1 by Vehicle Brand
FAQ
What does the P20A1 code mean?
P20A1 is an OBD-II diagnostic trouble code that indicates: Reductant Purge Control Valve A Performance
What causes a P20A1 error code?
The most common causes of P20A1 include: Reagent purge valve jammed; Open or short circuit in control circuit; Valve contamination; Poor quality or freezing of the reagent.
How do I fix a P20A1 diagnostic trouble code?
To fix P20A1: Check the condition and cleanliness of the valve. Check the valve control circuit for opens and shorts. Check valve coil resistance. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P20A1?
Yes, but get it checked soon
How much does it cost to fix P20A1?
The estimated repair cost for P20A1 is $28–89. Actual cost depends on your vehicle, location, and labor rates.
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