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P247B
System
Powertrain (Diesel Emissions)
Benötigter Scanner
Full-system scanner (engine, ABS, SRS, transmission, service resets)

Exhaust Gas Temperature Sensor Circuit Performance (Bank 1 Sensor 3)

Understand P247B, common causes, and the right TOPDON scanner to diagnose it.

Third EGT sensor (often post-DPF) performance fault.

Häufige Symptome

  • Regen monitoring fault
  • SCR efficiency codes

Typische Ursachen

  • Failed post-DPF EGT
  • Sensor tip soot insulated
  • Wiring fault

Welchen Scanner brauchen Sie?

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

Nutzen Sie Live-Daten und Freeze Frame, bevor Sie Teile tauschen. ABS-, SRS- und U-Codes erfordern meist einen Vollsystem-Scanner.

Diagnose-Tipps

  • Freeze Frame erfassen, wenn der Code erstmals gesetzt wird
  • Code erst nach Behebung der Ursache löschen
  • Auf verwandte pending codes prüfen
  • Batteriespannung über 12,4 V prüfen, bevor Sie Sensoren verdächtigen

Empfohlene TOPDON Scanner

Häufig gestellte Fragen

What does P247B mean?
P247B indicates exhaust gas temperature sensor circuit performance (bank 1 sensor 3). Third EGT sensor (often post-DPF) performance fault.
Can I diagnose P247B with a basic code reader?
P247B 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 P247B?
Full-system scanner (engine, ABS, SRS, transmission, service resets) See recommended tools on this page.
Is it safe to drive with P247B?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.