P2051
Reductant Injection Valve Circuit Low Bank 2 Unit 1
P2051 is an OBD-II diagnostic trouble code meaning: Reductant Injection Valve Circuit Low Bank 2 Unit 1. Common causes: open or short circuit in valve circuit, reagent injection valve malfunction. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- Reduced engine power
- Increased fuel consumption
- Increased NOx emissions
- Possible problems with passing technical inspection
Causes
- Open or short circuit in valve circuit
- Reagent injection valve malfunction
- Problems with the relay or circuit fuse
- Corrosion of contacts or connectors
- SCR control module malfunction
How to Fix
- Check the continuity and resistance of the valve circuit
- Inspect connectors and contacts for corrosion
- Check the functionality of the reagent injection valve
- Test the relays and fuses of the corresponding circuit
- If necessary, replace the valve or repair the wiring
Related codes
Error P2051 by Vehicle Brand
FAQ
What does the P2051 code mean?
P2051 is an OBD-II diagnostic trouble code that indicates: Reductant Injection Valve Circuit Low Bank 2 Unit 1
What causes a P2051 error code?
The most common causes of P2051 include: Open or short circuit in valve circuit; Reagent injection valve malfunction; Problems with the relay or circuit fuse; Corrosion of contacts or connectors.
How do I fix a P2051 diagnostic trouble code?
To fix P2051: Check the continuity and resistance of the valve circuit. Inspect connectors and contacts for corrosion. Check the functionality of the reagent injection valve. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2051?
Yes, but get it checked soon
How much does it cost to fix P2051?
The estimated repair cost for P2051 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat