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P2224
System
Powertrain (Diesel Emissions)
Scanner som krävs
Full-system scanner (engine, ABS, SRS, transmission, service resets)

NOx Sensor Performance (Bank 2 Sensor 1)

Understand P2224, common causes, and the right TOPDON scanner to diagnose it.

Bank 2 upstream NOx sensor performance out of spec.

Vanliga symptom

  • P20EE may accompany
  • SCR warning

Typiska orsaker

  • Failed NOx sensor
  • SCR catalyst degraded
  • DEF not injecting properly

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 P2224 mean?
P2224 indicates nox sensor performance (bank 2 sensor 1). Bank 2 upstream NOx sensor performance out of spec.
Can I diagnose P2224 with a basic code reader?
P2224 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 P2224?
Full-system scanner (engine, ABS, SRS, transmission, service resets) See recommended tools on this page.
Is it safe to drive with P2224?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.