P2049

Reductant Injection Valve Circuit High Bank 1 Unit 1

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–278 (est.)

Symptoms

Check Engine light comes on
Reduced engine power
Increased fuel consumption
Unpleasant exhaust smell
AdBlue system error message on the dashboard

Causes

Open or short circuit in valve circuit
Reagent injection valve malfunction
Problems with the relay or circuit fuse
Corrosion or poor contact in connectors
Engine ECU malfunction

How to Fix

Check valve control circuit integrity
Check the resistance of the reagent injection valve
Inspect connectors and wiring harness for damage
Check the functionality of the relays and fuses
If necessary, replace the reagent injection valve

Related codes

P2047 P2048 P2050