AutoCodes – Ford – P2138 2011 Ford Fusion

P2138 2011 Ford Fusion Code - Throttle/Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation

Quick Answer

The Accelerator Pedal Position (APP) sensor is an input to the Powertrain Control Module (PCM) and used to determine the amount of torque requested by the operator. Common causes include Faulty Accelerator Pedal Position (APP) Sensor, Accelerator Pedal Position (APP) Sensor harness is open or shorted, Accelerator Pedal Position (APP) Sensor circuit poor electrical connection. 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 2011 Ford Fusion indicates Throttle/Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation.
Common causes: Common causes include Faulty Accelerator Pedal Position (APP) Sensor, Accelerator Pedal Position (APP) Sensor harness is open or shorted, Accelerator Pedal Position (APP) Sensor circuit poor electrical connection.
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.

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Code Popularity 2,456

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

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Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
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Code P2138 2011 Ford Fusion Description

The Accelerator Pedal Position (APP) sensor is an input to the Powertrain Control Module (PCM) and used to determine the amount of torque requested by the operator. There are 2 pedal position signals in the sensor. Both signals, APP and APP2, have a positive slope (increasing angle, increasing voltage), but are offset and increase at different rates. The 2 pedal position signals make sure the PCM receives a correct input even if 1 signal has a concern. The PCM determines if a signal is incorrect by calculating where it should be, inferred from the other signals. If a concern is present with one of the circuits the other input is used. There are 2 reference voltage circuits, 2 signal return circuits, and 2 signal circuits (a total of 6 circuits and pins) between the PCM and the APP sensor assembly. The pedal position signal is converted to pedal travel degrees (rotary angle) by the PCM. The software converts these degrees to counts, which is the input to the torque based strategy. If the APP sensor inputs APP1 and APP2 disagree on the position of the accelerator pedal by more than an expected value, the P2138 is set.

OBDII Code P2138 2011 Ford Fusion - Throttle/Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation - AutoCodes.com — P2138 2011 Ford Fusion Code - Throttle/Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation

What does this mean?

What are the Possible Causes of the DTC P2138 2011 Ford Fusion?

Faulty Accelerator Pedal Position (APP) Sensor
Accelerator Pedal Position (APP) Sensor harness is open or shorted
Accelerator Pedal Position (APP) Sensor circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC P2138 2011 Ford Fusion?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2138 2011 Ford Fusion code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P2138 2011 Ford Fusion code?

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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 2011 Ford Fusion Code

1. What are the common symptoms of OBDII code P2138 in a 2011 Ford Fusion?

The common symptoms of OBDII code P2138 in a 2011 Ford Fusion may include loss of power, reduced acceleration, rough idling, and the vehicle going into limp mode.

2. What does the OBDII code P2138 'Throttle/Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation' mean for a 2011 Ford Fusion?

OBDII code P2138 for a 2011 Ford Fusion indicates a voltage correlation issue between the throttle position sensor and the pedal position sensor.

3. What are the possible causes of OBDII code P2138 in a 2011 Ford Fusion?

Possible causes of OBDII code P2138 in a 2011 Ford Fusion include faulty throttle position sensor, defective pedal position sensor, wiring issues, or a malfunctioning electronic control module.

4. How can I diagnose the OBDII code P2138 in my 2011 Ford Fusion?

Diagnosing OBDII code P2138 in a 2011 Ford Fusion involves checking the throttle position sensor and pedal position sensor for proper operation, inspecting the wiring for any damage, and using a diagnostic scanner to read the trouble codes.

5. Can I continue driving my 2011 Ford Fusion with OBDII code P2138?

It is not recommended to drive your 2011 Ford Fusion with OBDII code P2138 as it can lead to further damage to the vehicle and potentially unsafe driving conditions.

6. How can I repair OBDII code P2138 in my 2011 Ford Fusion?

To repair OBDII code P2138 in a 2011 Ford Fusion, you may need to replace the faulty throttle position sensor, pedal position sensor, or repair any damaged wiring. It's advisable to consult a professional mechanic for proper diagnosis and repair.

7. Can a DIYer fix OBDII code P2138 in a 2011 Ford Fusion?

While some DIYers may have the skills to diagnose and replace the sensors related to OBDII code P2138 in a 2011 Ford Fusion, it's recommended to seek professional help for accurate diagnosis and proper repair.

8. Will resetting the OBDII code P2138 in my 2011 Ford Fusion solve the issue?

Resetting the OBDII code P2138 in a 2011 Ford Fusion may temporarily clear the error code, but if the underlying issue with the throttle or pedal position sensors persists, the code is likely to reappear.

9. How much does it cost to repair OBDII code P2138 in a 2011 Ford Fusion?

The cost of repairing OBDII code P2138 in a 2011 Ford Fusion can vary depending on the extent of the issue, the parts needed for replacement, and the labor costs. It's advisable to get a few quotes from different mechanics for an accurate estimate.

10. Are there any recalls or technical service bulletins related to OBDII code P2138 in a 2011 Ford Fusion?

It's recommended to check with a Ford dealership or online resources for any recalls or technical service bulletins related to OBDII code P2138 in a 2011 Ford Fusion, as manufacturers sometimes provide assistance for known issues.