Powertrain
generic / SAE
P244A
Diesel Particulate Filter Differential Pressure Too Low
The differential pressure across the DPF is below the calibrated minimum even at higher loads. Often a sign of a damaged or missing filter substrate, or a leak in the sensing line.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number4 / 4A
Possible causes
- Cracked or missing DPF substrate high
- Leak in pressure sensing line medium
Symptoms
- Check engine light or DPF warning light on
- Power loss / limp mode
- Increased fuel consumption
- Failed forced regeneration attempts
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 400–3000 €
- Estimated time: 1.5–6 h
- Component: diesel particulate filter
- Component: dpf diff pressure sensor
- MIL / check engine light
- emissions-relevant
- drive cycle required
- limp mode possible
Sources
References
sae:J2012