P244D
Exhaust Temperature Too High For Particulate Filter Regeneration Bank 1
Diesel particulate filter
Generic OBD-II
Medium
What it means
P244D is a diesel code meaning the exhaust gas temperature during or entering diesel particulate filter (DPF) regeneration on bank 1 is too high for regeneration to run safely. Excessive regen temperatures can damage the DPF and nearby exhaust components. It's often a faulty exhaust gas temperature sensor reading high, but it can also reflect a genuine over-temperature condition.
Medium
Can I keep driving? Usually driveable, but repeated blocked regenerations can clog the DPF and dangerously high exhaust temps can cause damage; have it checked soon.
Common symptoms
What you'll notice
- Check-engine light on
- DPF/regeneration warning or incomplete regen cycles
- Possible reduced power or limp mode if regen keeps failing
- High exhaust-temperature warnings on some vehicles
Common causes
Most likely first
- Faulty exhaust gas temperature (EGT) sensor reading highLikely
- EGT sensor wiring or connector fault (short or open)Common
- Genuinely high exhaust temperature (over-fueling, injector fault, or overloaded/restricted DPF)Common
- Incorrect regeneration strategy triggered by a related faultLess often
- Faulty PCM/ECM (rare)Less often
How to diagnose & fix
Work through it in order
- Scan and compare the EGT sensor readings for a stuck-high or implausible value.
- Inspect the EGT sensor wiring and connector for shorts or opens.
- Check for over-fueling or injector faults that raise exhaust temperature.
- Replace the faulty EGT sensor if it reads high when actual temps are normal.
- Once fixed, allow a complete regeneration and confirm the code stays off.
FAQ
Quick answers
Is it safe to drive with P244D?+
Short trips are usually okay, but if regenerations keep aborting the DPF can clog, and truly high exhaust temps can cause damage. Have it diagnosed soon.
Can I just clear P244D?+
It returns at the next regeneration attempt unless the high-temperature reading or its cause is fixed.
Related codes
Often seen with P244D
Read & clear P244D 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