Powertrain
generic / SAE
P24D2
Reductant Heater A Sense Circuit
A general circuit fault on the AdBlue heater A sense feedback line.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number4 / D2
Possible causes
- Open in sense 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: medium
- DIY: shop recommended
- Estimated cost: 200–700 €
- Estimated time: 1–3 h
- Component: reductant heater a
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012