P0130: O2 Sensor Circuit (Bank 1 Sensor 1)
Key Takeaway
P0130 points to the upstream O2 sensor on Bank 1. Here's what causes it and how to fix it.
What P0130 Means
P0130 = the ECM detected an issue with the O2 sensor circuit on Bank 1, Sensor 1 (upstream, before the catalytic converter). This sensor is critical for fuel mixture control.
O2 Sensor Locations
| Position | Location | Purpose |
|---|---|---|
| Bank 1, Sensor 1 | Before the cat | Controls fuel mixture |
| Bank 1, Sensor 2 | After the cat | Monitors cat efficiency |
| Bank 2, Sensor 1 | Before the cat (V engines) | Controls fuel mixture |
| Bank 2, Sensor 2 | After the cat (V engines) | Monitors cat efficiency |
Common P0130 Causes
| Cause | Fix Cost |
|---|---|
| O2 sensor heater failure | $150 – $300 (sensor replacement) |
| Wiring damage/corrosion | $50 – $200 |
| Exhaust leak before sensor | $100 – $400 |
| Fuse issue (sensor heater circuit) | $1 – $5 |
| ECM issue (rare) | $500+ |
ProHow Steer Helps
Steer reads P0130 and identifies the sensor position so you know exactly which O2 sensor to inspect.
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