P065D
Reductant System Malfunction Lamp Control Circuit
A circuit fault on the AdBlue malfunction warning lamp output - regulatory in many regions to alert the driver of NOx aftertreatment problems.
A circuit fault on the AdBlue malfunction warning lamp output - regulatory in many regions to alert the driver of NOx aftertreatment problems.
Common causes
- high
Open in lamp or wiring
One of the most commonly reported causes for this code — check this first.
Typical part cost: $40-220
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does P065D mean?
P065D means "Reductant System Malfunction Lamp Control Circuit". It is a generic OBD-II code that points to a fault in the computer & auxiliary output controls.
What are the most common causes of P065D?
open in lamp or wiring — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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