P0173
Sistema
Powertrain (Fuel/Air)
Scanner richiesto
Enhanced OBD2 scanner (live data graphs, freeze frame, battery voltage test)

Fuel Trim Malfunction (Bank 2)

Understand P0173, common causes, and the right FOXWELL scanner to diagnose it.

Fuel trim control out of range on bank 2.

Sintomi comuni

  • Rough running on V engines
  • P0174/P0175 may follow

Cause tipiche

  • Bank 2 O2 sensor fault
  • Intake leak on bank 2
  • Fuel delivery imbalance

Quale scanner ti serve?

Enhanced OBD2 scanner (live data graphs, freeze frame, battery voltage test)

Usa dati live e freeze frame prima di sostituire componenti. I codici ABS, SRS e U richiedono spesso uno scanner mult sistema.

Consigli diagnostici

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

Scanner FOXWELL consigliati

Domande frequenti

Can I diagnose P0173 with a basic code reader?
P0173 may set in the engine module, but related diagnostics often benefit from an enhanced or full-system scanner with live data and freeze frame.
Is it safe to drive with P0173?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.