P244F code meaning
Exhaust Temperature Too High For Particulate Filter Regeneration (Bank 2)
Powertrain system Generic code P24xx codes Check engine light
What P244F means
The bank 2 counterpart of P244D: during a filter burn the second bank's exhaust gets hotter than the substrate tolerates. No manufacturer documents P244F publicly. The bank 1 version appears in GM's 2011 Duramax tables as a catalyst overtemperature during regeneration, and Ram links P244D on current Cummins trucks to exhaust temperature sensor faults, so a wrong sensor reading deserves suspicion before the hardware. On a real overheat the usual trigger is surplus fuel on that bank, from a dripping injector or a filter that was allowed to load up far too much before the burn started. The controller ends the regeneration, may reduce power and will retry later. Because overheating can crack the filter, a code that keeps returning should be diagnosed rather than repeatedly cleared. Too little heat on bank 2 is P244E.
P244F at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyHard
- Typical labor0.5 to 5 hours
- Clears after repairAfter a drive cycle
Symptoms of P244F
- Malfunction indicator lamp on
- Regeneration stopped, possibly reduced power
Common causes of P244F
- Most likelySurplus fuel on bank 2 from a leaking injector
- PossibleBank 2 exhaust temperature sensor or wiring reading too high
- PossibleBank 2 filter heavily overloaded before the burn
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
DPF b2
What each part of P244F means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 4 | Area: auxiliary emission controls (catalytic converter, EGR, EVAP). |
| 4F | The exact fault in that area. |
What to do next
- Note P244F and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P244F
What does P244F mean?
P244F means "Exhaust Temperature Too High For Particulate Filter Regeneration (Bank 2)". The bank 2 counterpart of P244D: during a filter burn the second bank's exhaust gets hotter than the substrate tolerates. It is a generic code, so it means the same on every make.
Is it safe to drive with P244F?
Drive gently and only to a workshop. With P244F the car can go into limp mode (reduced power) to protect itself.
Will P244F fail an emissions test?
Yes, it can. P244F is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P244F to fix?
Difficulty: hard. A typical repair takes 0.5 to 5 hours of work. This is a job for a workshop.
Will P244F clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.