P1155
Sistema
Powertrain (Emissions)
Scanner richiesto
Enhanced OBD2 scanner (live data graphs, freeze frame, battery voltage test)

Air/Fuel Sensor Heater Circuit (Bank 2 Sensor 1)

Understand P1155, common causes, and the right FOXWELL scanner to diagnose it.

Bank 2 wide-range A/F sensor heater circuit fault — Toyota/Lexus common on V6 engines.

Sintomi comuni

  • Check engine light
  • Poor fuel trim bank 2
  • Failed emissions

Cause tipiche

  • Failed A/F sensor heater
  • Blown fuse
  • Wiring in exhaust manifold area
  • Exhaust leak near sensor

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 P1155 with a basic code reader?
P1155 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 P1155?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.