Trouble codes › P0130
P0130 O2 Sensor Circuit (Bank 1 Sensor 1)
Oxygen sensors
P0130 means the engine computer isn't getting a sensible signal from bank 1's front oxygen sensor.
The engine computer isn't getting a sensible signal from the front oxygen sensor on bank 1 (before the catalytic converter), which it uses to fine-tune the fuel mixture.
Usually drivable, but fuel economy and emissions suffer. Get it checked soon.
Common causes
- A failed or contaminated oxygen sensor
- Damaged wiring or a corroded connector
- An exhaust leak near the sensor
- An engine problem making the mixture way off (check fuel trims)
Symptoms
- Check-engine light
- Worse fuel economy
- Sometimes rough idle or hesitation
What to check first
- Inspect the sensor's wiring and connector.
- Check for exhaust leaks ahead of the sensor.
- With a scan tool, watch the sensor on a warm engine at 2,000-2,500 rpm: a good narrowband sensor switches quickly between about 0.1 and 0.9 volts.
- Fix any lean, rich or misfire codes first, then replace the sensor if it's still slow or flat.
What does P0130 mean on your vehicle?
The likely cause depends on your engine. iRepair researches your exact year, make, model and engine (service bulletins, recalls and owner reports) and tells you what to check first. Your first 3 questions are free.
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Related codes
General guidance for P0130 on most vehicles. Some makers use the same code a little differently; confirm in the service information for your vehicle, put safety first, and see a professional when in doubt.