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All codes/P0130

P0130

O2 Sensor Circuit Malfunction (Bank 1 Sensor 1)

Moderate severity

This code means the computer isn't getting the expected signal from the oxygen sensor located before the catalytic converter on the engine's first bank of cylinders. This sensor measures the oxygen content in the exhaust to help the engine run efficiently.

O2 Sensor Circuit Malfunction (Bank 1 Sensor 1)

Common causes

  • Faulty O2 Sensor (Bank 1 Sensor 1)

    The sensor itself may have failed due to age, contamination, or electrical issues, leading to an incorrect or no signal.

    high

    Typical part cost: $50-200 part

  • Wiring/Connector Issues

    Damaged, corroded, or loose wires and connectors to the O2 sensor can interrupt the signal to the PCM.

    medium

    Typical part cost: $0-100 repair

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First things to check

  1. 1Visually inspect O2 sensor wiring and connector for damage or corrosion.
  2. 2Check for exhaust leaks near the Bank 1 Sensor 1 location.

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Tools you may need

Already have a compatible scanner? Use it. If not, a Bluetooth OBD2 adapter can help you confirm engine codes and check supported live sensor data before replacing parts.

Illustration of a Bluetooth OBD2 adapter, not a product photo

Basic checks

Veepeak OBDCheck BLE

A Bluetooth LE adapter for reading standard engine codes and supported live data.

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Illustration of a Bluetooth OBD2 adapter, not a product photo

Regular diagnostics

vgate iCar Pro BLE 4.0

A Bluetooth LE adapter with an automatic sleep feature for routine code and sensor checks.

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Illustration of a Bluetooth OBD2 adapter, not a product photo

Another option

OBDLink CX

A Bluetooth LE adapter to consider when comparing supported vehicles and diagnostic apps.

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Illustrations shown, not product photos. Check vehicle, phone and app compatibility before buying. These adapters do not guarantee access to ABS, airbags or manufacturer-specific systems. Clearing a code does not repair the fault and can reset emissions readiness monitors.

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Related codes

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Frequently asked questions

Can a P0130 code cause my car to fail emissions?

Yes, a P0130 code indicates an issue with a critical emissions component, and your vehicle will likely fail an emissions test until it's resolved.

Is it expensive to fix a P0130 code?

The cost varies, but often it's just a faulty oxygen sensor, which is a moderately priced part. Wiring issues can be cheaper, while PCM failure is much more expensive.

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