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P2220
Sistema
Powertrain (Diesel Emissions)
Scanner richiesto
Full-system scanner (engine, ABS, SRS, transmission, service resets)

NOx Sensor Current Low (Bank 1 Sensor 1)

Understand P2220, common causes, and the right TOPDON scanner to diagnose it.

NOx sensor cell current below expected range.

Sintomi comuni

  • False SCR efficiency codes
  • Check engine light

Cause tipiche

  • Aging NOx sensor
  • Contamination on probe
  • Exhaust leak before sensor

Di quale scanner hai bisogno?

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

Usa dati live e freeze frame prima di sostituire componenti. I codici ABS, SRS e U richiedono di solito uno scanner full-system.

Consigli diagnostici

  • Registra il freeze frame quando compare il codice
  • Cancella il codice solo dopo aver risolto la causa
  • Controlla codici pending correlati
  • Verifica che la batteria sia sopra 12,4 V prima di sospettare i sensori

Scanner TOPDON consigliati

Domande frequenti

What does P2220 mean?
P2220 indicates nox sensor current low (bank 1 sensor 1). NOx sensor cell current below expected range.
Can I diagnose P2220 with a basic code reader?
P2220 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 P2220?
Full-system scanner (engine, ABS, SRS, transmission, service resets) See recommended tools on this page.
Is it safe to drive with P2220?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.