how to fix P0135 code in Honda Civic 9th Generation (2012-2015)

Honda Civic 10th Generation (2016-2021)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

Error Code: P0135

3 min read

518 words

Problem Statement

Learn how to diagnose and fix P0135 oxygen sensor issue in Honda Civic 2012-2015. Step-by-step guide with diagnostic procedures and repair instructions.

Error Code

P0135

Affected Component

Exhaust System

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow the exhaust system to cool before handling components to avoid burns.

Symptoms

•Check engine light illuminated
•Poor fuel economy
•Rough engine idle
•Increased emissions
•Failed emissions test

Diagnostic Steps

1
Scan the vehicle's ECU using an OBD-II scanner to confirm the P0135 code and check for any related codes.
2
Inspect the wiring and connectors of the upstream O2 sensor for any visible damage, corrosion, or loose connections.
3
Measure the voltage output of the upstream O2 sensor with a multimeter to ensure it is within the expected range (typically 0.1 to 0.9 volts).
4
Check the vehicle’s fuse box for any blown fuses related to the O2 sensor circuit.
5
Test the O2 sensor heater circuit for continuity using a multimeter to verify proper operation.
6
Inspect the exhaust system for any leaks that may affect sensor readings.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•OBD-II scanner
•Oxygen sensor socket or wrench
•Multimeter
•Torque wrench

Parts Required

•Upstream oxygen sensor (specific to Honda Civic 2012-2015)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Scan the vehicle's ECU using an OBD-II scanner to confirm the P0135 code and check for any related codes.
2
Inspect the wiring and connectors of the upstream O2 sensor for any visible damage, corrosion, or loose connections.
3
Measure the voltage output of the upstream O2 sensor with a multimeter to ensure it is within the expected range (typically 0.1 to 0.9 volts).
4
Check the vehicle’s fuse box for any blown fuses related to the O2 sensor circuit.
5
Test the O2 sensor heater circuit for continuity using a multimeter to verify proper operation.
6
Inspect the exhaust system for any leaks that may affect sensor readings.

Solution

1. Preparation

Gather tools and parts required for the repair.
Disconnect the battery to ensure safety while working on the electrical components.

2. Replace the Upstream Oxygen Sensor

Locate the Upstream O2 Sensor:
- The upstream O2 sensor is typically located before the catalytic converter on the exhaust manifold.
Remove the Old O2 Sensor:
- Use an O2 sensor socket or a wrench to carefully unscrew the sensor from the exhaust pipe.
- Disconnect the electrical connector from the sensor.
Install the New O2 Sensor:
- Apply anti-seize compound on the threads of the new O2 sensor (if not pre-applied).
- Thread the new sensor into the exhaust pipe and tighten it to the manufacturer's torque specifications (usually around 30 ft-lbs, but verify with the service manual).
- Reconnect the electrical connector to the new sensor.

3. Clear the Error Code

Reconnect the battery.
Use the OBD-II scanner to clear the P0135 code from the ECU.

4. Test the Repair

Start the engine and allow it to reach operating temperature.
Perform a drive cycle to check if the check engine light reappears and to monitor the performance of the new O2 sensor.