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Home/Cars/Ford/F-150/12th Generation (2009-2014)/how do I fix the P0135 code on my Ford F-150 12th Generation (2009-2014)

how do I fix the P0135 code on my Ford F-150 12th Generation (2009-2014)

Ford F-150 12th Generation (2009-2014)

Error Codes
Severity: mediumDifficulty: mediumError Code: P01351-2 hours
3 min read
494 words

Problem Statement

Learn how to diagnose and fix P0135 oxygen sensor heater circuit issues in Ford F-150 (2009-2014). Step-by-step guide with diagnostic procedures and repair instructions.

Error Code
P0135
Affected Component
Exhaust System
Estimated Time
1-2 hours

Safety Warnings

  • ⚠Disconnect the battery before working on electrical systems.
  • ⚠Allow the engine to cool completely before handling any components in the exhaust system.

Symptoms

  • •Check engine light illuminated
  • •Rough idle or poor engine performance
  • •Decreased fuel economy
  • •Increased emissions
  • •Engine stalling during operation

Diagnostic Steps

  1. 1Scan the vehicle's computer with an OBD-II scanner to confirm the P0135 code and check for any related codes.
  2. 2Inspect the wiring and connectors for the Bank 1 Sensor 1 oxygen sensor for signs of damage or corrosion.
  3. 3Measure the voltage at the oxygen sensor heater circuit using a multimeter with the engine running.
  4. 4Check the fuse related to the oxygen sensor heater circuit in the fuse box.
  5. 5Test the oxygen sensor's resistance with a multimeter to see if it falls within the manufacturer's specifications.
  6. 6Inspect the exhaust system for any leaks that may affect the oxygen sensor's readings.

Solution

Solution

1. Preparation

  • Gather tools and parts required for the repair.
  • Ensure the vehicle is parked on a level surface and the engine is cool.
  • Disconnect the battery to prevent electrical shorts.

2. Remove the Oxygen Sensor

  • Locate the Bank 1 Sensor 1 oxygen sensor, typically found in the exhaust manifold or exhaust pipe.
  • Use an oxygen sensor socket to unscrew the sensor from its mounting point.
  • Disconnect the electrical connector from the sensor.

3. Inspect and Replace

  • Inspect the wiring harness and connector for damage; repair or replace as necessary.
  • If the sensor is faulty, install the new oxygen sensor by applying anti-seize compound to the threads (if required).
  • Carefully screw the new sensor into place and tighten to the manufacturer's specified torque.

4. Reconnect Components

  • Reconnect the electrical connector to the new oxygen sensor.
  • Reconnect the battery terminals.

5. Clear Codes and Test

  • Use the OBD-II scanner to clear any stored codes from the vehicle's computer.
  • Start the engine and allow it to reach operating temperature, monitoring for any check engine light illumination.

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
  • •Multimeter
  • •Oxygen sensor socket
  • •Wrench set
  • •Torque wrench

Parts Required

  • •New Bank 1 Sensor 1 oxygen sensor
  • •Electrical connectors (if damaged)

Additional Information

Error Code
P0135
Affected Component
Exhaust System
Estimated Time
1-2 hours
Difficulty
medium
Severity
medium
Tools Required
5 items
Parts Required
2 items

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