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Engine-Codes – Generic – P0124

P0124 Code - Throttle Position Sensor/Switch A Circuit Intermittent

Quick Answer

The P0124 code indicates a problem with the Throttle Position Sensor (TPS) or switch circuit in the vehicle. Common causes include Worn-out Throttle Position Sensor, Damaged wiring or connectors in the TPS circuit, Corrosion on electrical connections. 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
P0124 indicates Throttle Position Sensor/Switch A Circuit Intermittent.
Common causes
Common causes include Worn-out Throttle Position Sensor, Damaged wiring or connectors in the TPS circuit, Corrosion on electrical connections.
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 07, 2024
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Code P0124 Description

The P0124 code indicates a problem with the Throttle Position Sensor (TPS) or switch circuit in the vehicle. The TPS is a crucial component that monitors the position of the throttle valve and sends this information to the engine control unit (ECU) to adjust the air-fuel mixture for optimal performance. In this case, the code specifically refers to an intermittent issue, meaning that the signal from the TPS is not consistent or stable.

OBDII Code P0124 - Throttle Position Sensor/Switch A Circuit Intermittent
P0124 Code - Throttle Position Sensor/Switch A Circuit Intermittent

Common Causes of P0124

  1. Worn-out Throttle Position Sensor
  2. Damaged wiring or connectors in the TPS circuit
  3. Corrosion on electrical connections
  4. Faulty ECU or TPS module
  5. Environmental factors such as moisture or heat affecting sensor performance

Symptoms of P0124

  1. Rough idling or fluctuating idle speed
  2. Hesitation or surging during acceleration
  3. Poor fuel economy
  4. Engine stalling or intermittent loss of power
  5. Check Engine Light illuminated on the dashboard

How to Fix P0124

  1. Diagnose the issue by using a scan tool to check for the P0124 code and perform a visual inspection of the TPS and related components.
  2. Test the TPS using a multimeter to check for proper voltage readings at different throttle positions.
  3. Replace the Throttle Position Sensor if it is found to be faulty, ensuring that it is calibrated correctly.
  4. Inspect and repair any damaged wiring or connectors in the TPS circuit.
  5. Clear the fault code from the ECU and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0124

The cost of repairing a P0124 code can vary depending on the make and model of the vehicle, as well as the extent of the issue. Typically, the price range for replacing a Throttle Position Sensor is between $100 and $300, including parts and labor. However, additional costs may apply if there are other underlying problems that need to be addressed. It is recommended to consult a professional mechanic for an accurate estimate based on the specific circumstances of your vehicle. Keep in mind that labor rates at auto repair shops can vary, so it's advisable to inquire about pricing before proceeding with the repair.

When is the Code Detected?

An intermittent voltage from the TP sensor is sent to ECM.

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Code P0124 Information for Specific Makes

  • P0124 Chrysler — Throttle Position Sensor/Accelerator Position Pedal Circuit Intermittent
  • P0124 Dodge — Throttle Position Sensor/Accelerator Position Pedal Circuit Intermittent
  • P0124 Hyundai — Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
  • P0124 Jeep — Throttle Position Sensor/Accelerator Position Pedal Circuit Intermittent
  • P0124 KIA — Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
  • P0124 Mazda — Intermittent Throttle Position Sensor Signal
  • P0124 Mercedes-Benz — Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
  • P0124 Mitsubishi — Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
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 P0124 Code

1. What are common symptoms of OBDII code P0124 related to the throttle position sensor/switch A circuit intermittent?

The common symptoms include issues with acceleration, rough idling, poor fuel efficiency, and possibly stalling of the vehicle.

2. What are the possible causes of OBDII code P0124?

The possible causes of this code include a faulty throttle position sensor, damaged wiring or connectors in the sensor circuit, or a problem with the powertrain control module (PCM).

3. How can I diagnose the cause of OBDII code P0124?

You can diagnose the cause by using a scan tool to read the code and data related to the throttle position sensor's operation. Additionally, inspect the sensor and its wiring for any visible damage.

4. Can a dirty throttle body cause OBDII code P0124?

While a dirty throttle body can affect the sensor's performance, it is not a direct cause of code P0124. However, it is always recommended to keep the throttle body clean for optimal engine performance.

5. Is it safe to drive with OBDII code P0124 present?

It is not recommended to drive with this code present, as it can lead to poor vehicle performance and potential safety issues. It is best to address the underlying cause promptly.

6. How can I repair OBDII code P0124 related to the throttle position sensor/switch A circuit intermittent?

To repair this code, you may need to replace the throttle position sensor, repair any damaged wiring or connectors, or reprogram the PCM if necessary.

7. Can I reset OBDII code P0124 without fixing the underlying issue?

While you can reset the code using a scan tool, it will likely reappear if the underlying issue with the throttle position sensor/switch A circuit intermittent is not addressed.

8. How much does it typically cost to repair OBDII code P0124?

The cost of repairing this code can vary depending on the specific cause of the issue, but it may range from $100 to $300 for parts and labor.

9. How long does it take to repair OBDII code P0124?

The repair time can vary based on the complexity of the issue and the extent of the repairs needed. In general, it may take a few hours to half a day to address this code.

10. Can I prevent OBDII code P0124 from occurring in the future?

To help prevent this code, it is essential to maintain regular vehicle maintenance, including checking and replacing the throttle position sensor as needed, and addressing any related issues promptly.

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