Index des codes défaut · low
P0155
Defective O2 Sensor Heater Circuit (Bank 2 Sensor 1)
Defective O2 Sensor Heater Circuit (Bank 2 Sensor 1)
Common causes
- See factory diagnostic procedure / wiring diagram for this code
Quick checks
- Confirm freeze-frame and conditions when the code set
- Inspect connectors, grounds, and harness for the circuit named in the code
- Compare live sensor values vs expected (unplugged/biased sensors are common)
Typical fixes
- Replace O2 Sensor (Bank 2 Sensor 1)