P246B
Système
Powertrain (Diesel Emissions)
Scanner requis
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).

Symptômes courants

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

Causes typiques

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

Quel scanner choisir ?

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

Utilisez les données en direct et le freeze frame avant de remplacer des pièces. Les codes ABS, SRS et U nécessitent souvent un scanner mult systèmes.

Conseils de diagnostic

  • Enregistrez le freeze frame lors de la première apparition du code
  • Effacez le code uniquement après avoir corrigé la cause
  • Vérifiez les codes en attente associés
  • Vérifiez que la batterie est au-dessus de 12,4 V avant de suspecter un capteur

Scanners FOXWELL recommandés

Questions fréquentes

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.