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P2223
System
Powertrain (Diesel Emissions)
Benötigter Scanner
Full-system scanner (engine, ABS, SRS, transmission, service resets)

NOx Sensor Current High (Bank 2 Sensor 1)

Understand P2223, common causes, and the right TOPDON scanner to diagnose it.

Bank 2 NOx sensor current high.

Häufige Symptome

  • Check engine light
  • Derate on heavy diesel

Typische Ursachen

  • Failed sensor
  • Internal NOx cell short
  • Module 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 P2223 mean?
P2223 indicates nox sensor current high (bank 2 sensor 1). Bank 2 NOx sensor current high.
Can I diagnose P2223 with a basic code reader?
P2223 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 P2223?
Full-system scanner (engine, ABS, SRS, transmission, service resets) See recommended tools on this page.
Is it safe to drive with P2223?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.