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Home/Cars/Ford/F-150/13th Generation (2015-2020)/how to fix P0135 code in Ford F-150 13th Generation (2015-2020)

how to fix P0135 code in Ford F-150 13th Generation (2015-2020)

Ford F-150 13th Generation (2015-2020)

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

Problem Statement

Learn how to diagnose and fix P0135 oxygen sensor issue in Ford F-150 (2015-2020). 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 battery before working on electrical systems.
  • ⚠Allow the engine to cool before working on exhaust components.

Symptoms

  • •Check engine light illuminated
  • •Poor fuel economy
  • •Rough idle
  • •Increased emissions
  • •Engine performance issues (e.g., sluggish acceleration)

Diagnostic Steps

  1. 1Scan for error codes using an OBD-II scanner to confirm P0135 and check for additional codes.
  2. 2Inspect the wiring and connectors leading to the Bank 1 sensor 1 for damage, corrosion, or loose connections.
  3. 3Measure the voltage at the oxygen sensor connector with a multimeter to check for proper operation.
  4. 4Check the vehicle’s fuse related to the oxygen sensor circuit.
  5. 5Test the oxygen sensor for functionality by performing a heater resistance test.
  6. 6Inspect the exhaust system for leaks that could affect oxygen sensor readings.

Solution

Solution

1. Preparation

  • Tools Required: OBD-II scanner, multimeter, socket set, torque wrench, oxygen sensor socket.
  • Disconnect the negative battery terminal to ensure safety during repairs.

2. Remove the Faulty Oxygen Sensor

  • Locate the Bank 1 sensor 1 oxygen sensor (typically located before the catalytic converter).
  • Use the oxygen sensor socket to carefully unscrew the sensor from the exhaust pipe.
  • Inspect the threads and sealing surface for any debris or damage.

3. Install the New Oxygen Sensor

  • Apply anti-seize compound to the threads of the new oxygen sensor (if not pre-applied).
  • Carefully thread the new oxygen sensor into the exhaust pipe by hand to avoid cross-threading.
  • Tighten the sensor to the manufacturer's specifications (typically around 30 lb-ft).

4. Reconnect Electrical Connections

  • Ensure that the wiring harness is undamaged and properly connected to the new oxygen sensor.
  • Reconnect the negative battery terminal.

5. Clear Codes and Test

  • Use the OBD-II scanner to clear the P0135 code from the vehicle’s computer.
  • Start the engine and allow it to reach operating temperature, then monitor for any reoccurrence of the code.

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
  • •Socket set
  • •Torque wrench
  • •Oxygen sensor socket

Parts Required

  • •New oxygen sensor (Bank 1 sensor 1)

Additional Information

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

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