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

• •Check engine light illuminated
• •Poor fuel economy
• •Engine misfires or rough idling
• •Increased emissions
• •Failed emissions test

1. 1Scan for error codes using an OBD-II scanner to confirm the P0133 code and check for any additional codes.
2. 2Inspect the wiring and connectors to the upstream oxygen sensor for damage, corrosion, or loose connections.
3. 3Check the oxygen sensor heater circuit by measuring voltage and resistance with a multimeter.
4. 4Inspect the exhaust system for leaks, particularly before the oxygen sensor, which could affect readings.
5. 5Test the oxygen sensor by monitoring the voltage output while the engine is running to ensure it fluctuates between 0.1V and 0.9V.
6. 6Check the fuel trims using the scanner to see if they are within normal ranges.

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

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

• •OBD-II scanner
• •Multimeter
• •22mm oxygen sensor socket
• •Torque wrench
• •Anti-seize compound

• •New upstream oxygen sensor (Bank 1 Sensor 1)