What does code P0155 mean?
The heater circuit of the front oxygen sensor B2S1 is not operating
OBD-II Code
P0155 — Oxygen Sensor Heater Circuit Malfunction Bank 2 Sensor 1
The heater circuit of the front oxygen sensor B2S1 is not operating
Common symptoms
- Cold start issues
- increased fuel consumption
Possible causes
- Damaged heater element
- blown fuse
- broken wiring
Initial recommendation
Check fuse and wiring, replace oxygen sensor.
Safety notice
This information is for guidance only and does not replace a physical vehicle inspection or diagnosis by a qualified mechanic. If the vehicle has severe power loss, smoke, a fuel odor, overheating, brake or steering problems, or any unsafe behavior, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
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