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

P2461

DPF Restriction — Forced Limited

The DPF restriction has reached the limit defined for forced limited operation. Vehicle behaviour depends on the manufacturer — usually a hard torque cap with a service warning.

SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number4 / 61

Possible causes

  • Heavy soot load, regenerations skipped high
  • Ash loaded near service interval medium

Symptoms

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

Inspection / repair

  • Difficulty: hard
  • DIY: shop recommended
  • Estimated cost: 200–3500 €
  • Estimated time: 1–6 h
  • Component: diesel particulate filter
  • Component: dpf differential pressure sensor
  • MIL / check engine light
  • emissions-relevant
  • drive cycle required
  • limp mode possible

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