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Engine-Codes – Generic – P2126

P2126 Code - Throttle/Pedal Position Sensor/Switch 'E' Circuit Range/Performance

Quick Answer

The P2126 diagnostic trouble code (DTC) refers to an issue with the Throttle/Pedal Position Sensor/Switch 'E' Circuit Range/Performance. Common causes include Faulty throttle position sensor, Faulty pedal position sensor, Wiring harness issues. 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
P2126 indicates Throttle/Pedal Position Sensor/Switch 'E' Circuit Range/Performance.
Common causes
Common causes include Faulty throttle position sensor, Faulty pedal position sensor, Wiring harness issues.
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 15, 2024
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Code P2126 Description

The P2126 diagnostic trouble code (DTC) refers to an issue with the Throttle/Pedal Position Sensor/Switch 'E' Circuit Range/Performance. This code indicates that the signal from the throttle position sensor or pedal position sensor is not within the expected range, affecting the performance of the vehicle. The throttle position sensor (TPS) is a crucial component that monitors the position of the throttle valve and sends this information to the engine control module (ECM) to adjust fuel delivery and ignition timing. The pedal position sensor, on the other hand, detects the position of the accelerator pedal and communicates this data to the ECM.

OBDII Code P2126 - Throttle/Pedal Position Sensor/Switch 'E' Circuit Range/Performance
P2126 Code - Throttle/Pedal Position Sensor/Switch 'E' Circuit Range/Performance

Common Causes of P2126

  1. Faulty throttle position sensor
  2. Faulty pedal position sensor
  3. Wiring harness issues
  4. Connector problems
  5. ECM faults

Symptoms of P2126

  1. Reduced power and acceleration
  2. Rough idling or stalling
  3. Poor fuel efficiency
  4. Check Engine Light illuminated
  5. Vehicle going into limp mode

How to Fix P2126

  1. Perform a thorough inspection of the throttle and pedal position sensors, wiring harness, and connectors.
  2. Test the sensors using a multimeter to check for proper voltage and resistance.
  3. Replace any faulty sensors, wiring, or connectors as needed.
  4. Clear the DTC and reset the ECM to see if the code returns.
  5. Test drive the vehicle to ensure the issue has been resolved and the code does not reappear.

Cost to Fix P2126

The typical repair costs for addressing the P2126 code can vary depending on the specific cause of the issue. In general, replacing a faulty throttle or pedal position sensor can cost between $100 and $300 each, including parts and labor. If wiring harness or connector issues are the culprit, additional diagnostic time and labor may be required, potentially increasing the overall repair cost. It is advisable to consult with a qualified mechanic or auto repair shop to get an accurate estimate based on the specific circumstances of your vehicle. Keep in mind that labor rates can vary, so it's essential to inquire about rates in your local area for a more precise cost estimate.

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Code P2126 Information for Specific Makes

  • P2126 Dodge — Throttle/Pedal Position Sensor/Switch 'E' Circuit Range/Performance
  • P2126 Ford — Throttle/Pedal Position Sensor/Switch 'E' Circuit Range/Performance
  • P2126 Lexus — Throttle/Pedal Position Sensor/Switch 'E' Circuit Range / Performance
  • P2126 Lincoln — Throttle/Pedal Position Sensor/Switch 'E' Circuit Range/Performance
  • P2126 Mercury — Throttle/Pedal Position Sensor/Switch 'E' Circuit Range/Performance
  • P2126 Scion — Throttle/Pedal Position Sensor/Switch 'E' Circuit Range / Performance
  • P2126 Toyota — Throttle/Pedal Position Sensor/Switch 'E' Circuit Range / Performance
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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