P201A
Reductant Injection Valve Circuit Range/Performance Bank 2 Unit 1
P201A is an OBD-II diagnostic trouble code meaning: Reductant Injection Valve Circuit Range/Performance Bank 2 Unit 1. Common causes: reagent injection valve malfunction, open or short circuit in valve circuit. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- Reduced engine power
- Increased fuel consumption
- SCR system error message on dashboard
- Increased NOx emissions
Causes
- Reagent injection valve malfunction
- Open or short circuit in valve circuit
- Problems with the wiring harness or connectors
- Malfunction of the engine control unit (ECU)
- Valve is dirty or clogged
How to Fix
- Check the integrity of the valve circuit and connectors
- Check valve resistance (compare with manufacturer's specifications)
- Clean or replace the reagent injection valve if necessary
- Check the operation of the SCR system using a diagnostic scanner
- If necessary, replace the engine control unit
Related codes
Error P201A by Vehicle Brand
FAQ
What does the P201A code mean?
P201A is an OBD-II diagnostic trouble code that indicates: Reductant Injection Valve Circuit Range/Performance Bank 2 Unit 1
What causes a P201A error code?
The most common causes of P201A include: Reagent injection valve malfunction; Open or short circuit in valve circuit; Problems with the wiring harness or connectors; Malfunction of the engine control unit (ECU).
How do I fix a P201A diagnostic trouble code?
To fix P201A: Check the integrity of the valve circuit and connectors. Check valve resistance (compare with manufacturer's specifications). Clean or replace the reagent injection valve if necessary. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P201A?
Yes, but get it checked soon
How much does it cost to fix P201A?
The estimated repair cost for P201A is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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