OBD-II code guide
P0130 Oxygen Sensor Circuit Bank 1 Sensor 1
P0130 means the upstream oxygen sensor circuit on bank 1 is not behaving as expected.
What it means
The computer may not trust the oxygen sensor signal used for fuel control.
Common symptoms
- Check engine light
- Poor fuel economy
- Rough idle
- Hesitation
- Emissions failure
Likely causes
- Faulty oxygen sensor
- Exhaust leak
- Wiring damage
- Rich or lean engine condition
- Connector contamination
First checks
- Inspect wiring near the exhaust.
- Check for exhaust leaks before the sensor.
- Review fuel trims.
- Do not replace the sensor until engine mixture issues are considered.