Fault Code P2040
Code meaning, symptoms, possible causes, part number, and estimated cost.
P2040
Reductant Injection Valve Circuit High Bank 1 Unit 1
This code indicates an abnormally high voltage detected in the reductant injection valve (AdBlue/DEF) circuit for Bank 1 Unit 1.
Part Details
Part Name
Reductant Injection Valve
Reference P/N (OEM)
N/A
General part number for this fault code — not necessarily for your specific vehicle
Estimated Cost
₪700 - ₪1800
Engine Location
SCR system, near DEF injector
Symptoms
- Check Engine Light on
- Increased DEF consumption
- Poor engine performance
- Vehicle speed limitation
Possible Causes
- 1Electrical failure in the injection valve
- 2Short or faulty wiring in the valve circuit
- 3Defective Engine Control Module (ECM)
- 4Corrosion in electrical connectors
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