OBD-II code · Powertrain (generic)
P0130 O2 Sensor Circuit Malfunction (Bank 1, Sensor 1)
The upstream oxygen sensor on bank 1 reports an implausible signal — typically stuck mid-range, no switching between rich and lean, or no signal at all. Closed-loop fuel control cannot run while this fault is active.
Is it safe to drive with P0130?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyOxygen sensor aged or contaminated
- PossibleSensor harness chafed against exhaust
- Less likelyWater in sensor connector
Symptoms
- Check engine light on
- Increased fuel consumption
- Possible rough idle or hesitation
- Failed emissions test
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.3–1.5 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Oxygen Sensor Upstream, Oxygen Sensor Wiring
Related codes
- P0136O2 Sensor Circuit Malfunction (Bank 1, Sensor 2)
- P0150O2 Sensor Circuit Malfunction (Bank 2, Sensor 1)
- P0156O2 Sensor Circuit Malfunction (Bank 2, Sensor 2)
- P012DTurbocharger/Supercharger Inlet Pressure Sensor A Circuit High
- P012ETurbocharger/Supercharger Inlet Pressure Sensor A Circuit Intermittent/Erratic
- P012FEngine Coolant Temperature / Engine Oil Temperature Correlation
- P0131O2 Sensor Circuit Low Voltage (Bank 1, Sensor 1)
- P0132O2 Sensor Circuit High Voltage (Bank 1, Sensor 1)
- P0133O2 Sensor Slow Response (Bank 1, Sensor 1)
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.