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P247B
System
Powertrain (Diesel Emissions)
Scanner som krävs
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.

Vanliga symptom

  • Regen monitoring fault
  • SCR efficiency codes

Typiska orsaker

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

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 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.