P244C
Exhaust Temperature Too Low For Particulate Filter Regeneration Bank 1
During an attempted regeneration of the bank 1 DPF the EGT did not reach the temperature window needed for soot oxidation. Regeneration could not start or was held. Driving in higher load is needed.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: easy
Symptoms
- Check engine light or DPF warning light on
- Power loss / limp mode
- Increased fuel consumption
- Failed forced regeneration attempts
Common causes
Ordered by how often each turns out to be the cause.
- Engine load too low for regenerationCommon
Parts involved
- DPF B1
- Exhaust Gas Temperature Sensor B1
P244C is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.