Powertrain
generic / SAE
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.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number6 / 5D
Possible causes
- Open in lamp or wiring high
Symptoms
- Check engine light or NOx warning on
- AdBlue/DEF level or quality warning
- Possible no-start countdown after ignore period
- Failed emissions inspection (NOx)
Inspection / repair
- Difficulty: easy
- DIY: possible
- Estimated cost: 40–200 €
- Estimated time: 0.3–1 h
- Component: reductant warning lamp
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012