P0130 — 02 Sensor Circuit Malfunction (Bank I Sensor 1)
Category: Powertrain Severity: High
Updated:
DTC code P0130 means: 02 Sensor Circuit Malfunction (Bank I Sensor 1). It falls under the "Powertrain" category, with an estimated severity of High. Common causes include faulty oxygen (O2) sensor (Bank 1 Sensor 1), wiring or connector damage/corrosion and exhaust leak near the sensor; it's worth confirming the diagnosis before replacing parts.
Possible causes
- Faulty oxygen (O2) sensor (Bank 1 Sensor 1)
- Wiring or connector damage/corrosion
- Exhaust leak near the sensor
- Blown fuse (if heater-related)
Symptoms
- Check engine light on
- Increased fuel consumption
- Rough idle in some cases
- Possible failed emissions test
How to diagnose it step by step
- Check the bank 1 upstream sensor connector and wiring.
- Watch whether the signal switches between 0.1 and 0.9 V when warm.
- Look for exhaust leaks before the sensor.
- Replace the sensor if it doesn't respond.
How to fix it
Inspect the wiring and connector of the Bank 1 Sensor 1 oxygen sensor for damage or corrosion, and check for exhaust leaks nearby. If both are fine, the sensor itself is most likely faulty and should be replaced — O2 sensors wear out over time and don't have a simple repair.
Estimated repair cost
O2 sensor installed: $100–300.
Frequently asked questions
What does DTC code P0130 mean?
02 Sensor Circuit Malfunction (Bank I Sensor 1).
Is code P0130 serious?
Severity High. Have it checked as soon as possible, especially if it affects safety or the catalytic converter.
Can I keep driving with code P0130?
Yes, you can drive; fix it to avoid higher fuel use.
Related codes
P0131 P0132 P0133 P0134 P0135 P0136 P0137 P0128 P0138 P0139
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