MasterTuning Fault code dictionary (DTC)

P0155 — Oxygen Sensor Heater Circuit Malfunction

Severity: Attenzione Can you drive? Sì, no known limitation Produttore: Tutti makes (OBD-II standard)
MeaningThe Motore computer has detected a Problema with the internal heating circuit di the oxygen sensor located on Bank 2, Sensor 1. This heater helps the sensor reach its correct operating temperature quickly after you start the Macchina so it can properly read the exhaust gases.
FamilyPowertrain (P)

Typical symptoms

Check Motore light is on
Increased fuel consumption over Durata
Rough Motore running when the engine is cold

Common causes

Faulty oxygen sensor internal heater
Blown fuse related a the oxygen sensor heater circuit
Damaged wiring oppure loose connector alle the sensor

What a do

Check the wiring harness and fuses linked a the oxygen sensor Prima, as these are quick to inspect. Piano to have the sensor tested soon, since a cold sensor delays proper fuel adjustment.

Domande Frequenti

What does code P0155 mean?

Oxygen Sensor Heater Circuit Malfunction. The Motore computer has detected a Problema with the internal heating circuit di the oxygen sensor located on Bank 2, Sensor 1. This heater helps the sensor reach its correct operating temperature quickly after you start the Macchina so it can properly read the exhaust gases.

Can I keep driving with code P0155 Attivo?

Sì, no known limitation

Common causes — P0155

Faulty oxygen sensor internal heater Blown fuse related a the oxygen sensor heater circuit Damaged wiring oppure loose connector alle the sensor

How do you fix code P0155?

Check the wiring harness and fuses linked a the oxygen sensor Prima, as these are quick to inspect. Piano to have the sensor tested soon, since a cold sensor delays proper fuel adjustment.

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