OBD-II reference

All 9.533 generic OBD-II codes, explained in detail.

Causes, inspection steps and sources — a comprehensive DIY archive. Created and maintained with love for the detail. Good luck and have fun!

Powertrain generic / SAE

P244E

Exhaust Temperature Too Low For Particulate Filter Regeneration Bank 2

During an attempted regeneration of the bank 2 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.

SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number4 / 4E

Possible causes

  • Engine load too low for regeneration high

Symptoms

  • Check engine light or DPF warning light on
  • Power loss / limp mode
  • Increased fuel consumption
  • Failed forced regeneration attempts

Inspection / repair

  • Difficulty: easy
  • DIY: possible
  • Estimated cost: 20–200 €
  • Estimated time: 0–1 h
  • Component: dpf b2
  • MIL / check engine light
  • emissions-relevant

Sources

References

How to read OBD-II codes

The first letter names the vehicle system, the second digit distinguishes generic from manufacturer-specific, the remaining digits group fault area and number.

PPowertrain: engine, transmission, emissions
BBody: chassis trim, comfort, interior
CChassis: suspension, brakes, steering
UNetwork: CAN, control modules, communication