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P2138 2010 Ford Fusion Code - Throttle/Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation

Quick Answer

The P2138 diagnostic trouble code (DTC) for a 2010 Ford Fusion indicates a Throttle/Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation issue. Common causes include Faulty throttle position sensor, Faulty pedal position sensor, Wiring harness issues or corrosion. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P2138 2010 Ford Fusion indicates Throttle/Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation.
Common causes
Common causes include Faulty throttle position sensor, Faulty pedal position sensor, Wiring harness issues or corrosion.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 14, 2024
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Code P2138 2010 Ford Fusion Description

The P2138 diagnostic trouble code (DTC) for a 2010 Ford Fusion indicates a Throttle/Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation issue. This code is specifically related to the correlation between the throttle position sensor and the pedal position sensor, which are crucial components in the vehicle's electronic throttle control system. The throttle position sensor (TPS) monitors the position of the throttle valve, while the pedal position sensor (PPS) detects the position of the accelerator pedal. The correlation between these sensors is essential for the engine control module (ECM) to accurately adjust the throttle opening based on driver input.

OBDII Code P2138 2010 Ford Fusion - Throttle/Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation
P2138 2010 Ford Fusion Code - Throttle/Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation

Common Causes of P2138 2010 Ford Fusion

  1. Faulty throttle position sensor
  2. Faulty pedal position sensor
  3. Wiring harness issues or corrosion
  4. Electronic control module (ECM) failure
  5. Poor electrical connections or grounds

Symptoms of P2138 2010 Ford Fusion

  1. Lack of throttle response or delayed acceleration
  2. Erratic idling or stalling
  3. Sudden acceleration without driver input
  4. Check engine light illuminated on the dashboard

How to Fix P2138 2010 Ford Fusion

  1. Begin by conducting a thorough diagnostic scan to confirm the P2138 code and pinpoint the exact cause of the issue.
  2. Inspect the throttle position sensor and pedal position sensor for any signs of damage or malfunction. Replace any faulty sensors as needed.
  3. Check the wiring harness connected to the sensors for any breaks, corrosion, or loose connections. Repair or replace damaged wiring.
  4. Test the electronic control module (ECM) to ensure it is functioning correctly. If necessary, reprogram or replace the ECM.
  5. Clear the DTC and perform a test drive to verify that the issue has been resolved and that the sensors are now correlating properly.

Cost to Fix P2138 2010 Ford Fusion

The typical repair costs for addressing a P2138 code on a 2010 Ford Fusion can range from $200 to $500, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary, with hourly rates typically falling between $80 and $150. Rates may be higher at dealerships or in metropolitan areas, while independent shops often offer more competitive pricing. For a precise estimate, it's recommended to consult local auto repair shops.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P2138 2010 Ford Fusion Code

1. What are common symptoms of OBDII code P2138 in a 2010 Ford Fusion?

- Common symptoms include reduced engine power, hesitation or stalling when accelerating, and illuminated Check Engine Light.

2. What does OBDII code P2138 in a 2010 Ford Fusion indicate?

- The code P2138 indicates a voltage correlation issue between the throttle position sensor and pedal position sensor in the vehicle.

3. What are the possible causes of OBDII code P2138 in a 2010 Ford Fusion?

- Possible causes include faulty throttle position sensor, pedal position sensor issues, wiring problems, or a malfunctioning electronic throttle control system.

4. How can I diagnose the cause of OBDII code P2138 in my 2010 Ford Fusion?

- A thorough diagnostic process involving testing the throttle and pedal position sensors, checking for wiring faults, and inspecting the electronic throttle control system is recommended.

5. Is it safe to drive with OBDII code P2138 in a 2010 Ford Fusion?

- It is not recommended to drive the vehicle with code P2138 as it can lead to unsafe driving conditions due to potential loss of power and control.

6. Can I reset OBDII code P2138 in a 2010 Ford Fusion by disconnecting the battery?

- Disconnecting the battery may clear the code temporarily, but it is essential to diagnose and repair the underlying issue to prevent the code from reoccurring.

7. How can I repair OBDII code P2138 in my 2010 Ford Fusion?

- Repair options include replacing faulty sensors, repairing or replacing damaged wiring, or addressing issues within the electronic throttle control system.

8. Will cleaning the throttle body help resolve OBDII code P2138 in a 2010 Ford Fusion?

- While cleaning the throttle body is a good maintenance practice, it may not directly resolve the specific issue indicated by code P2138. It is essential to diagnose the problem accurately.

9. How much does it typically cost to repair OBDII code P2138 in a 2010 Ford Fusion?

- The cost of repair can vary depending on the specific cause of the code, but it may involve sensor replacement, wiring repair, or electronic throttle control system servicing.

10. Can I drive my 2010 Ford Fusion to a repair shop with OBDII code P2138?

- If the vehicle is exhibiting severe symptoms like loss of power or stalling, it is advisable to have the car towed to a repair shop to prevent any safety risks while driving.

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