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P2123 Ford Code - Throttle/Pedal Position Sensor/Switch 'D' Circuit High

Quick Answer

The P2123 Ford code indicates a problem with the Throttle/Pedal Position Sensor/Switch 'D' Circuit High. Common causes include Faulty Throttle/Pedal Position Sensor/Switch, 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
P2123 Ford indicates Throttle/Pedal Position Sensor/Switch 'D' Circuit High.
Common causes
Common causes include Faulty Throttle/Pedal Position Sensor/Switch, 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 P2123 Ford Description

The P2123 Ford code indicates a problem with the Throttle/Pedal Position Sensor/Switch 'D' Circuit High. This sensor is crucial for the proper functioning of the vehicle's throttle system, as it monitors the position of the accelerator pedal and sends signals to the engine control module (ECM) to adjust the throttle accordingly. When this sensor detects a high voltage signal, it signifies that the throttle position is higher than expected, leading to potential performance issues.

OBDII Code P2123 Ford - Throttle/Pedal Position Sensor/Switch 'D' Circuit High
P2123 Ford Code - Throttle/Pedal Position Sensor/Switch 'D' Circuit High

Common Causes of P2123 Ford

  1. Faulty Throttle/Pedal Position Sensor/Switch
  2. Damaged wiring or connectors in the sensor circuit
  3. ECM malfunction
  4. Corrosion or debris affecting sensor connections
  5. Extreme temperature fluctuations affecting sensor performance

Symptoms of P2123 Ford

  1. Reduced engine power
  2. Difficulty accelerating
  3. Engine stalling or surging
  4. Illuminated Check Engine Light
  5. Inability to maintain constant speed

How to Fix P2123 Ford

  1. Begin by diagnosing the specific cause of the high voltage signal, using a diagnostic scan tool to retrieve freeze frame data and pinpoint the issue.
  2. Inspect the Throttle/Pedal Position Sensor/Switch 'D' circuit for any visible damage or corrosion, and test the sensor's voltage output using a multimeter.
  3. Check the wiring and connectors in the circuit for any signs of wear or damage, repairing or replacing as necessary.
  4. If the sensor itself is faulty, replace it with a new OEM or high-quality aftermarket part, following manufacturer guidelines for installation.
  5. Clear the diagnostic trouble codes from the ECM and perform a test drive to ensure the issue has been resolved.

Cost to Fix P2123 Ford

The cost of repairing a Throttle/Pedal Position Sensor/Switch 'D' Circuit High issue can vary depending on the specific cause of the problem and the vehicle's make and model. In general, the cost of parts for this repair can range from $50 to $200, while labor costs can add an additional $100 to $200. Therefore, the total repair cost could fall between $150 and $400 at an average auto repair shop. It is recommended to consult with a local mechanic or dealership for a more accurate estimate based on your vehicle's specific needs.

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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 P2123 Ford Code

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  • I have P2123, P2127,and P1000 codes on a 2008 6.4l This started after I removed the dash to replace the heater core. Any ideas?

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  • Codes are related to the pedal position sensor. Check the connector to the gas pedal.

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