AutoCodes – Ford – P2135 2011 Ford Fusion

P2135 2011 Ford Fusion Code - Throttle/Pedal Position Sensor/Switch 'A'/'B' 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: P2135 2011 Ford Fusion indicates Throttle/Pedal Position Sensor/Switch 'A'/'B' 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 3,000

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 P2135 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. The PCM flagged a concern indicating that throttle position voltage PIDs TP1 and TP2 disagree by more than a calibrated limit.

OBDII Code P2135 2011 Ford Fusion - Throttle/Pedal Position Sensor/Switch 'A'/'B' Voltage Correlation - AutoCodes.com — P2135 2011 Ford Fusion Code - Throttle/Pedal Position Sensor/Switch 'A'/'B' Voltage Correlation

What does this mean?

What are the Possible Causes of the DTC P2135 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 P2135 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 P2135 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.

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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 P2135 2011 Ford Fusion Code

1. What are the common symptoms of OBDII code P2135 in a 2011 Ford Fusion?

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

2. What does OBDII code P2135 indicate in a 2011 Ford Fusion?

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

3. What are the possible causes of OBDII code P2135 in a 2011 Ford Fusion?

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

4. How can I diagnose the OBDII code P2135 in my 2011 Ford Fusion?

- Diagnosis typically involves using a diagnostic scanner to retrieve the trouble codes, checking the throttle and pedal position sensor voltages, and inspecting the wiring for any signs of damage.

5. Can I still drive my 2011 Ford Fusion with OBDII code P2135?

- It is not recommended to drive the vehicle with this code as it can lead to unsafe driving conditions and potential damage to the engine or other components.

6. How can I repair OBDII code P2135 in my 2011 Ford Fusion?

- Repair may involve replacing the faulty throttle position sensor, pedal position sensor, or repairing any damaged wiring. It's advisable to consult a professional mechanic for accurate diagnosis and repair.

7. Are there any DIY tips for troubleshooting OBDII code P2135 in a 2011 Ford Fusion?

- You can visually inspect the wiring harness for any visible damage, check the sensor connectors for loose connections, and ensure proper voltage readings from the sensors using a multimeter.

8. How much does it cost to fix OBDII code P2135 in a 2011 Ford Fusion?

- Repair costs can vary depending on the extent of the issue, the parts needed for replacement, and labor charges. It's recommended to get estimates from different auto repair shops.

9. Will resetting the OBDII code P2135 in my 2011 Ford Fusion make it go away permanently?

- Resetting the code may temporarily turn off the Check Engine Light, but if the underlying issue causing the code is not fixed, the code is likely to reappear.

10. Can a bad throttle position sensor cause OBDII code P2135 in a 2011 Ford Fusion?

- Yes, a malfunctioning throttle position sensor can cause the voltage correlation issue between the throttle and pedal position sensors, triggering OBDII code P2135.