AutoCodes – Ford – P2135 2012 Ford Fusion

P2135 2012 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 2012 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 3,725

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 2012 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 2012 Ford Fusion - Throttle/Pedal Position Sensor/Switch 'A'/'B' Voltage Correlation - AutoCodes.com — P2135 2012 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 2012 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 2012 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 2012 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 2012 Ford Fusion Code

1. What does OBDII code P2135 for a 2012 Ford Fusion indicate?

The code P2135 on a 2012 Ford Fusion points to an issue with the Throttle/Pedal Position Sensor/Switch 'A'/'B' Voltage Correlation.

2. What are the common symptoms of OBDII code P2135 in a 2012 Ford Fusion?

Common symptoms of code P2135 in a 2012 Ford Fusion include reduced engine power, hesitation or stalling, and illuminated Check Engine Light.

3. What are the potential causes of OBDII code P2135 in a 2012 Ford Fusion?

Possible causes of code P2135 in a 2012 Ford Fusion include a faulty throttle position sensor, pedal position sensor issues, wiring problems, or a malfunctioning electronic throttle control system.

4. How can I diagnose the Throttle/Pedal Position Sensor/Switch 'A'/'B' Voltage Correlation issue in my 2012 Ford Fusion?

Diagnosing code P2135 in a 2012 Ford Fusion involves using a diagnostic scanner to read the trouble codes, performing a visual inspection of the sensors and wiring, and testing the sensor voltages with a multimeter.

5. Can I continue driving my 2012 Ford Fusion with OBDII code P2135?

It is not recommended to drive your 2012 Ford Fusion with code P2135, as it can lead to potential safety hazards and further damage to the vehicle. It is best to address the issue promptly.

6. How can I repair OBDII code P2135 in my 2012 Ford Fusion?

Repairing code P2135 in a 2012 Ford Fusion typically involves replacing the faulty throttle position sensor or pedal position sensor, repairing any damaged wiring, and resetting the ECU to clear the code.

7. Will resetting the Check Engine Light resolve OBDII code P2135 in a 2012 Ford Fusion?

Simply resetting the Check Engine Light may temporarily clear the code, but it will likely return if the underlying issue causing code P2135 is not addressed and repaired.

8. Can a DIY enthusiast fix OBDII code P2135 in a 2012 Ford Fusion?

Depending on your mechanical skills and access to tools, DIY enthusiasts may be able to fix code P2135 in a 2012 Ford Fusion by following repair guides and being cautious with electrical components.

9. How much does it cost to repair OBDII code P2135 in a 2012 Ford Fusion at a mechanic?

The cost of repairing code P2135 in a 2012 Ford Fusion at a mechanic can vary depending on the specific cause of the issue, but it typically ranges from $200 to $500, including parts and labor.

10. Are there any recalls related to OBDII code P2135 in a 2012 Ford Fusion?

It is advisable to check with Ford or the National Highway Traffic Safety Administration (NHTSA) to see if there are any recalls related to code P2135 in a 2012 Ford Fusion, as some issues may be covered under a manufacturer's recall.