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AutoCodes – Ford – P2135 Ford

P2135 Ford 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 Ford 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 108,957
How popular is this code, among other codes? Medium
What is this?
Table of contents Created and updated by William Orellana on Aug 09, 2020
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Code P2135 Ford 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 Ford - Throttle/Pedal Position Sensor/Switch 'A'/'B' Voltage Correlation - AutoCodes.com
P2135 Ford Code - Throttle/Pedal Position Sensor/Switch 'A'/'B' Voltage Correlation
What does this mean?

What are the Possible Causes of the DTC P2135 Ford?

  • 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 Ford?

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 does this mean?

Code Tech Notes













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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2135 Ford 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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Information for Specific Ford Models

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 Ford Code

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

- Common symptoms include reduced engine power, hesitation or stalling, rough idling, and the vehicle going into limp mode.

2. What does the OBDII code P2135 for a Ford indicate?

- The code P2135 indicates a Throttle/Pedal Position Sensor/Switch 'A'/'B' Voltage Correlation issue.

3. What are the possible causes of OBDII code P2135 in a Ford related to the Throttle/Pedal Position Sensor/Switch?

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

4. How can I diagnose the OBDII code P2135 in a Ford related to the Throttle/Pedal Position Sensor/Switch?

- Diagnosing the issue involves checking the sensor readings using a scan tool, inspecting the sensor wiring for damage or loose connections, and performing a physical inspection of the sensors.

5. Can I continue driving my Ford with the OBDII code P2135 present?

- It is not recommended to drive the vehicle with the P2135 code present, as it can lead to unsafe driving conditions and potential further damage to the engine.

6. How can I repair the OBDII code P2135 related to the Throttle/Pedal Position Sensor/Switch in my Ford?

- Repairing the issue may involve replacing the faulty sensors, repairing damaged wiring, or resetting the electronic throttle control system.

7. Is it possible to reset the OBDII code P2135 in a Ford without repairs?

- Resetting the code without addressing the underlying issue may temporarily clear the code, but it is likely to return if the root cause is not fixed.

8. Are there any preventive maintenance tips to avoid OBDII code P2135 in a Ford?

- Regularly inspecting and maintaining the throttle and pedal position sensors, as well as the wiring harness, can help prevent issues leading to the P2135 code.

9. Can a DIY enthusiast fix the OBDII code P2135 in a Ford, or is professional help required?

- Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to address the P2135 code themselves. However, complex issues may require professional assistance.

10. How long does it typically take to repair the OBDII code P2135 in a Ford at a mechanic's shop?

- The repair time can vary based on the specific cause of the code and the shop's workload, but it typically takes a few hours to diagnose and repair the P2135 code related to the Throttle/Pedal Position Sensor/Switch in a Ford vehicle.

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