P246B
Systeem
Powertrain (Diesel Emissions)
Scanner vereist
Full-system scanner (engine, ABS, SRS, transmission, service resets)

Diesel Particulate Filter Restriction — Ash Accumulation

Understand P246B, common causes, and the right FOXWELL scanner to diagnose it.

DPF ash load exceeded limit — filter nearing end of service life. Ash cannot be burned off by regen (unlike soot P2463).

Veelvoorkomende symptomen

  • DPF warning
  • Frequent regen requests
  • Reduced power
  • May require DPF replacement

Typische oorzaken

  • High-mileage DPF
  • Excessive oil consumption adding ash
  • Wrong engine oil type for diesel
  • Failed regens accelerating ash buildup

Welke scanner heb je nodig?

Full-system scanner (engine, ABS, SRS, transmission, service resets)

Gebruik live data en freeze frame voordat je onderdelen vervangt. ABS-, SRS- en U-codes vereisen meestal een full-system scanner.

Diagnosetips

  • Leg freeze frame vast wanneer de code voor het eerst verschijnt
  • Wis de code pas na het oplossen van de oorzaak
  • Controleer op gerelateerde pending codes
  • Controleer of accuspanning boven 12,4 V is voordat je sensoren suspecteert

Aanbevolen FOXWELL scanners

Veelgestelde vragen

Can I diagnose P246B with a basic code reader?
P246B may set in the engine module, but related diagnostics often benefit from an enhanced or full-system scanner with live data and freeze frame.
Is it safe to drive with P246B?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.