RFI 175 | How to fix | Check Engine | Error Code 0031 & 0132 | Oxygen Sensor

Introduction

This tutorial will guide you through diagnosing and fixing error codes 0031 and 0132, which are commonly associated with oxygen sensor issues in your vehicle. These error codes can trigger the check engine light and affect your vehicle's performance. By following these steps, you can identify the problem and take appropriate action to resolve it.

Step 1: Gather Necessary Tools

Before starting the diagnosis and repair, ensure you have the following tools on hand:

• OBD-II scanner to read error codes
• Multimeter for testing electrical connections
• Basic hand tools (screwdrivers, wrenches)
• Replacement oxygen sensor (if needed)
• Service manual for your vehicle model (for reference)

Step 2: Read Error Codes

Using an OBD-II scanner, follow these steps:

1. Connect the scanner to the vehicle's diagnostic port, usually located under the dashboard.
2. Turn on the ignition without starting the engine.
3. Access the scanner’s menu to read stored error codes.
4. Note the error codes 0031 and 0132 for further diagnosis.

Step 3: Inspect Wiring and Connectors

Once you have the error codes, proceed to inspect the related wiring and connectors:

1. Locate the oxygen sensor in your vehicle. Refer to your service manual for the exact location.
2. Visually inspect the wiring for any signs of damage, corrosion, or loose connections.
3. Use a multimeter to test the continuity of the wiring:
   • Disconnect the sensor and measure the resistance of the wiring.
   • A reading close to zero indicates proper continuity, while a high reading suggests a break or short in the wire.

Step 4: Test the Oxygen Sensor

To ensure the oxygen sensor is functioning correctly, perform the following test:

1. With the multimeter, measure the voltage output from the oxygen sensor while the engine is running.
2. You should see a fluctuating voltage between 0.1 to 0.9 volts.
3. If the voltage is stable or outside this range, the sensor may need to be replaced.

Step 5: Replace the Oxygen Sensor (If Necessary)

If your tests indicate that the oxygen sensor is faulty, follow these steps to replace it:

1. Disconnect the old oxygen sensor by unscrewing it from the exhaust system.
2. Install the new oxygen sensor by screwing it into place.
3. Reconnect the electrical connector to the new sensor.
4. Clear the error codes using the OBD-II scanner to reset the check engine light.

Conclusion

By following these steps, you should be able to diagnose and fix the check engine light errors related to the oxygen sensor. Regularly checking your vehicle's error codes and inspecting related components can help maintain optimal performance. If the problem persists after replacing the sensor, consider consulting a professional mechanic for further assistance.