P2056

Reductant Injection Valve Circuit/Open Bank 2 Unit 2

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine light comes on
Possible reduction in engine power
Increased NOx emissions
SCR system fault message on the dashboard
Increased AdBlue consumption

Causes

Open or short circuit in valve circuit
Reagent injection valve malfunction
Problems with the wiring harness or connectors
SCR control module malfunction
Valve is dirty or clogged

How to Fix

Check the integrity of the wiring and connectors in the valve circuit
Check the resistance of the reagent injection valve
Clean or replace injection valve if necessary
Check the operation of the SCR control module
Reset the error code and perform a system test

Related codes

P2055 P2057 P204F