Hybspec

P0135

Średni

Lambda Sensor Heater Bank 1, Sensor 1 — Circuit Malfunction

OBD-II (EN): O2 Sensor Heater Circuit (Bank 1, Sensor 1)

Code P0135 — Lambda Sensor Heater Bank 1, Sensor 1 — Circuit Malfunction. Symptoms: increased fuel consumption when cold. Possible cause: burnt sensor heater. Professional diagnosis recommended.

Symptoms

Increased fuel consumption when cold, extended sensor warm-up time

Possible causes

Burnt sensor heater, open circuit in heater power supply, faulty relay

Affected systems

Silnik spalinowyUkład wydechowy

Related codes

Tags and synonyms

Does code P0135 require professional diagnostics?

The code alone is not enough. To find the cause, you need to read live data, check freeze frame conditions, and compare with vehicle behavior. Book a diagnostic session.