Powertrain
generic / SAE
P2D45
Reductant Temperature Too Low
The reductant temperature is below the calibrated minimum. DEF/AdBlue may not flow correctly through the dosing system - heater fault or extreme cold weather.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / numberD / 45
Possible causes
- Reductant heater failed high
- Extreme ambient cold medium
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: 200–1200 €
- Estimated time: 1–5 h
- Component: reductant tank
- Component: reductant heater
- Component: reductant lines
- MIL / check engine light
- emissions-relevant
- drive cycle required
- limp mode possible
Sources
References
sae:J2012