P2054

Reductant Injection Valve Circuit Low Bank 1 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 urea consumption (AdBlue)
Increased NOx emissions
The SCR system goes into emergency mode

Causes

Reagent injection valve malfunction
Open or short circuit in control circuit
Poor contact in connectors
SCR control unit malfunction
Circuit power problems

How to Fix

Check valve control circuit integrity
Check injection valve resistance
Inspect connectors and contacts for corrosion
Check the supply voltage of the circuit
If necessary, replace the reagent injection valve

Related codes

P2055 P2056 P204F