FAULTBASE
Error CodesASKCars
© 2025 FAULTBASE
All rights reserved.
v2.0.0 • Production
ContactPrivacyImpressum
Home/Cars/Honda/Accord/8th Generation (2008-2012)/how to fix P0133 code in Honda Accord 8th Generation (2008-2012)

how to fix P0133 code in Honda Accord 8th Generation (2008-2012)

Honda Accord 8th Generation (2008-2012)

Error Codes
Severity: mediumDifficulty: mediumError Code: P01331-2 hours
3 min read
515 words

Problem Statement

Learn how to diagnose and fix P0133 code related to the oxygen sensor in Honda Accord 2008-2012. Step-by-step guide with symptoms and solutions.

Error Code
P0133
Affected Component
Exhaust System
Estimated Time
1-2 hours

Safety Warnings

  • ⚠Disconnect battery before working on electrical systems.
  • ⚠Allow the engine to cool before opening the exhaust system.

Symptoms

  • •Check engine light illuminated
  • •Decreased fuel efficiency
  • •Rough engine idle
  • •Engine stalling or hesitation during acceleration
  • •Increased exhaust emissions

Diagnostic Steps

  1. 1Scan the vehicle using an OBD-II scanner to confirm the P0133 code and check for any additional codes.
  2. 2Inspect the wiring and connectors of the upstream oxygen sensor for damage or corrosion.
  3. 3Check the oxygen sensor heater circuit with a multimeter to ensure it is functioning properly.
  4. 4Measure the voltage output of the oxygen sensor at idle and while revving the engine.
  5. 5Inspect the air intake system for vacuum leaks that could affect sensor readings.
  6. 6Check the engine coolant temperature sensor for proper operation as it can influence fuel mixture.

Solution

Solution

1. Preparation

  • Gather the necessary tools and parts.
  • Disconnect the negative terminal of the battery to ensure safety.
  • Allow the engine to cool down before starting work.

2. Remove the Oxygen Sensor

  • Locate the upstream oxygen sensor (Bank 1 Sensor 1) near the exhaust manifold.
  • Use an oxygen sensor socket or wrench to carefully unscrew the sensor from the exhaust pipe.
  • Disconnect the wiring harness from the oxygen sensor.

3. Inspect and Replace the Oxygen Sensor

  • Inspect the removed oxygen sensor for carbon buildup or damage. If it appears faulty, replace it.
  • Install the new oxygen sensor, ensuring the threads are clean and lubricated with anti-seize compound if recommended by the manufacturer.
  • Torque the oxygen sensor to the specified value (typically 30-40 ft-lbs).

4. Reconnect Wiring and Battery

  • Connect the wiring harness back to the new oxygen sensor.
  • Reconnect the negative battery terminal.

5. Clear Codes and Test

  • Use the OBD-II scanner to clear the P0133 code from the vehicle’s memory.
  • Start the engine and allow it to reach operating temperature.
  • Monitor the engine performance and check for any new codes.

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 (Bank 1 Sensor 1)

Additional Information

Error Code
P0133
Affected Component
Exhaust System
Estimated Time
1-2 hours
Difficulty
medium
Severity
medium
Tools Required
4 items
Parts Required
1 item

Related Faults

  1. why is my Honda Accord 10th Generation (2018-2022) losing coolant with no visible leak

    Discover how to diagnose and fix coolant loss in 2018-2022 Honda Accord. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

    Cooling System5 symptoms

  2. how to fix the traction control light that stays on in my Honda Accord 10th Generation (2018-2022)

    Learn how to diagnose and fix the traction control light issue in Honda Accord 10th Generation (2018-2022). Step-by-step guide with diagnostic procedures and repair instructions.

    Electrical5 symptoms

  3. how to diagnose EGR valve problems in Honda Accord 8th Generation (2008-2012)

    Learn how to diagnose and fix EGR valve issues in Honda Accord 8th Generation (2008-2012). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

    Engine6 symptoms

  4. how to fix my Honda Accord 10th Generation (2018-2022) air conditioning that won’t turn on?

    Learn how to diagnose and fix the air conditioning not turning on in Honda Accord 10th Generation (2018-2022). Step-by-step guide with tools and tips.

    HVAC5 symptoms

  5. how to reset the oil light in Honda Accord 10th Generation (2018-2022)

    Learn how to reset the oil light in your Honda Accord 10th Generation (2018-2022) after an oil change. Step-by-step guide for a quick reset.

    Electrical3 symptoms

  6. why is my Honda Accord 10th Generation (2018-2022) having issues with remote start

    Learn how to diagnose and fix remote start issues in Honda Accord 10th Generation (2018-2022). Step-by-step guide with symptoms and solutions.

    Electrical5 symptoms

Share this solution

Comments

Sign in to share your thoughts

Sign In

No comments yet

Be the first to share your thoughts

Back to Generation