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P24AF
System
Powertrain (Diesel Emissions)
Scanner som krävs
Full-system scanner (engine, ABS, SRS, transmission, service resets)

Particulate Filter Regeneration Incomplete

Understand P24AF, common causes, and the right TOPDON scanner to diagnose it.

DPF regeneration started but did not complete successfully.

Vanliga symptom

  • Soot level still high after regen attempt
  • Check engine light

Typiska orsaker

  • Stopped mid-regen by driver
  • Fault aborted regen
  • Insufficient fuel dosing
  • EGT too low during regen

Vilken scanner behöver du?

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

Använd live-data och freeze frame innan du byter delar. ABS-, SRS- och U-koder kräver oftast en fullsystems-scanner.

Diagnostiktips

  • Spara freeze frame när koden först sätts
  • Rensa koden först efter att orsaken är åtgärdad
  • Kontrollera relaterade väntande koder
  • Verifiera batterispänning över 12,4 V innan du misstänker sensorer

Rekommenderade TOPDON-scannrar

Vanliga frågor

What does P24AF mean?
P24AF indicates particulate filter regeneration incomplete. DPF regeneration started but did not complete successfully.
Can I diagnose P24AF with a basic code reader?
P24AF may set in the engine module, but related diagnostics often benefit from an enhanced or full-system scanner with live data and freeze frame.
Which TOPDON scanner do I need for P24AF?
Full-system scanner (engine, ABS, SRS, transmission, service resets) See recommended tools on this page.
Is it safe to drive with P24AF?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.