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P2128 Ford Code - Throttle/Pedal Position Sensor/Switch 'E' Circuit High

Quick Answer

The P2128 Ford diagnostic trouble code indicates an issue with the Throttle/Pedal Position Sensor/Switch 'E' Circuit being too high. Common causes include Faulty throttle position sensor, Damaged wiring or connectors in the sensor circuit, ECM malfunction. 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
P2128 Ford indicates Throttle/Pedal Position Sensor/Switch 'E' Circuit High.
Common causes
Common causes include Faulty throttle position sensor, Damaged wiring or connectors in the sensor circuit, ECM malfunction.
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 09, 2024
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Code P2128 Ford Description

The P2128 Ford diagnostic trouble code indicates an issue with the Throttle/Pedal Position Sensor/Switch 'E' Circuit being too high. This sensor is crucial for the proper functioning of the vehicle's electronic throttle control system. The throttle position sensor (TPS) is responsible for sending the correct voltage signal to the engine control module (ECM) to determine the throttle position. The ECM uses this information to regulate the air-fuel mixture and control the engine's performance.

OBDII Code P2128 Ford - Throttle/Pedal Position Sensor/Switch 'E' Circuit High
P2128 Ford Code - Throttle/Pedal Position Sensor/Switch 'E' Circuit High

Common Causes of P2128 Ford

  1. Faulty throttle position sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. ECM malfunction
  4. Corrosion or contamination in the sensor connections
  5. Electrical issues such as short circuits or open circuits

Symptoms of P2128 Ford

  1. Erratic acceleration
  2. Hesitation or stalling when pressing the accelerator
  3. Rough idling
  4. Reduced fuel efficiency
  5. Limp mode activation

How to Fix P2128 Ford

  1. Begin by conducting a thorough inspection of the throttle position sensor, wiring, and connectors for any visible damage or corrosion.
  2. Use a multimeter to test the sensor's resistance and voltage output to determine if it is functioning within specifications.
  3. If the sensor is faulty, replace it with a new OEM or high-quality aftermarket part.
  4. Check and repair any damaged wiring or connectors in the sensor circuit.
  5. Clear the diagnostic trouble codes from the ECM and perform a test drive to ensure the issue has been resolved.

Cost to Fix P2128 Ford

The typical repair costs for addressing the Throttle/Pedal Position Sensor/Switch 'E' Circuit High issue can range from $150 to $400, depending on the specific cause of the problem and the cost of parts. This estimate includes both parts and labor. It's important to note that diagnosis time and labor rates can vary depending on the location, vehicle make and model, and the type of engine. It's recommended to inquire with local auto repair shops for a more accurate estimate.

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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.

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