how to fix P0135 code in Ford F-150 14th Generation (2021-2024)

• •Check engine light illuminated
• •Engine running rich or lean
• •Decreased fuel economy
• •Rough idle or stalling
• •Increased emissions during emissions testing

1. 1Scan the vehicle using an OBD-II scanner to confirm the P0135 code and check for any additional codes.
2. 2Inspect the wiring and connectors for the bank 1 sensor 1 oxygen sensor for damage, corrosion, or loose connections.
3. 3Measure the resistance of the heater circuit of the oxygen sensor using a multimeter.
4. 4Check the power and ground signals at the oxygen sensor connector with a multimeter.
5. 5If necessary, inspect the engine control module (ECM) for software updates or faults.

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
• •O2 sensor socket
• •Torque wrench
• •Wire strippers
• •Electrical tape
• •Penetrating oil

• •New oxygen sensor (bank 1 sensor 1)