P244F
Exhaust Temperature Too High For Particulate Filter Regeneration Bank 2
Diesel particulate filter (DPF)
Generic OBD-II
Medium
What it means
P244F means the exhaust temperature on Bank 2 rose too high during a diesel particulate filter regeneration — either a genuine over-temperature or a temperature sensor reading falsely high. Excessive heat can damage the filter, so the ECM may limit power, and the cause should be found before the DPF is harmed.
Medium
Can I keep driving? Drivable but treat it seriously — over-temperature during regeneration can damage the particulate filter, so ease off heavy loads and get it checked soon.
Common symptoms
What you'll notice
- Check-engine light on
- Possible reduced power or limp mode
- Longer or interrupted regeneration cycles
- Extra heat or smell from the exhaust during regen
Common causes
Most likely first
- Faulty exhaust gas temperature (EGT) sensor reading high on Bank 2Likely
- Over-fueling during regeneration (leaking or stuck injector)Common
- Excess soot load causing runaway regeneration burnCommon
- Corroded connector or wiring at the EGT sensorLess often
- Fault in the regeneration/dosing control strategyLess often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and compare the Bank 2 EGT reading to the other bank.
- Inspect the EGT sensor connector and wiring for damage or corrosion.
- Check for a leaking or stuck injector adding extra fuel during regen.
- Verify the sensor reads plausibly against a scan tool during operation.
- Replace the exhaust gas temperature sensor if it reads falsely high, then clear and re-test.
FAQ
Quick answers
Is it safe to drive with P244F?+
Drive gently to a shop. Genuine over-temperature during regeneration can crack or melt the particulate filter, an expensive repair.
Can I just clear P244F?+
It will return during the next regeneration unless the sensor or the cause of the high temperature is fixed.
Related codes
Often seen with P244F
Read & clear P244F yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX