00935 DTC Code: Understanding and Troubleshooting


The 00935 DTC (Diagnostic Trouble Code) is a common error code that indicates an issue with the vehicle’s onboard diagnostic system. When this code appears, it means that there is a problem with the vehicle’s throttle position sensor (TPS).

In this SEO-friendly article, we will delve deep into the causes, symptoms, and possible solutions for the 00935 DTC code. Whether you are a car enthusiast or a professional mechanic, this comprehensive guide will help you understand, troubleshoot, and resolve the issue.

Understanding the 00935 DTC Code

1. What is a DTC Code?

A DTC code, also known as a diagnostic trouble code, is a standardized code produced by the vehicle’s onboard computer system. It helps identify specific problems affecting the vehicle’s various systems. The 00935 DTC code specifically relates to the throttle position sensor.

2. What is the Throttle Position Sensor (TPS)?

The throttle position sensor (TPS) is a crucial component in a vehicle’s fuel injection system. It monitors the position of the throttle valve, which helps control the amount of air entering the engine. The TPS sends this information to the vehicle’s engine control unit (ECU) to calculate the appropriate fuel and air mixture for optimal engine performance.

Symptoms of 00935 DTC Code

When the 00935 DTC code is triggered, certain symptoms may arise, indicating a potential issue with the throttle position sensor. Some common symptoms include:

  • Check Engine Light: The most noticeable and common symptom is the illumination of the vehicle’s check engine light. When this light comes on, it serves as a warning that the vehicle’s computer has detected an issue.

  • Unresponsive Acceleration: Another symptom is unresponsive acceleration or a lack of power when pressing down on the accelerator pedal. The vehicle may hesitate or experience reduced power, affecting its overall performance.

  • Idling Issues: In some cases, the engine may idle erratically or experience a fluctuating idle speed. This can lead to a rough idle or stalling of the engine when at a standstill.

Causes of the 00935 DTC Code

Several factors can contribute to the appearance of the 00935 DTC code. These causes include:

  • Faulty Throttle Position Sensor: The most common cause of this error code is a malfunctioning throttle position sensor itself. Over time, the TPS can wear out or become contaminated, leading to inaccurate readings or a complete failure.

  • Wiring Issues: Faulty or damaged wiring connected to the throttle position sensor can also trigger the 00935 DTC code. Damaged wires, loose connections, or corrosion can disrupt the signal between the TPS and the engine control unit.

  • ECU Malfunction: In some rare cases, the vehicle’s engine control unit may be experiencing internal malfunctions, resulting in erroneous error codes such as the 00935 DTC code.

Troubleshooting and Resolving the 00935 DTC Code

Steps to Troubleshoot the Issue

To diagnose and resolve the 00935 DTC code, follow these steps:

  1. Scan for Additional Codes: Perform a comprehensive scan of the vehicle’s onboard computer system to check for any additional error codes. Addressing any related codes may help identify the root cause of the problem.

  2. Inspect the Throttle Position Sensor: Physically inspect the throttle position sensor for any signs of damage, contamination, or wear. Ensure that it is securely connected with no loose or damaged wiring.

  3. Test the Throttle Position Sensor: Using a multimeter or a specialized diagnostic tool, test the throttle position sensor’s voltage readings at various throttle positions. Compare the readings with the manufacturer’s specifications.

  4. Inspect Wiring Connections: Inspect the wiring connections between the throttle position sensor and the engine control unit. Look for any signs of damage, corrosion, or loose connections. Repair or replace any faulty wiring.

  5. Reset the Error Code: After addressing any identified issues, reset the error code and clear it from the vehicle’s computer system. This will allow you to determine if the issue has been successfully resolved.

Frequently Asked Questions (FAQs)

  1. Q: Can I continue driving with the 00935 DTC code?

    A: While it is possible to continue driving with the 00935 DTC code, it is generally not recommended. The code indicates an issue with the throttle position sensor, which can impact the vehicle’s performance and fuel efficiency. It is advisable to have the issue addressed as soon as possible.

  2. Q: Can I replace the throttle position sensor myself?

    A: Replacing the throttle position sensor can be a complex task, especially for inexperienced individuals. It often involves proper diagnostics and potentially calibrating the sensor after installation. It is recommended to consult a professional mechanic to ensure proper installation and calibration.

  3. Q: How much will it cost to fix the 00935 DTC code?

    A: The cost of fixing the 00935 DTC code can vary depending on several factors, including the labor rates in your area, the specific vehicle make and model, and any additional components that may require replacement. It is best to consult with a trusted mechanic who can provide you with an accurate estimate based on your vehicle’s specific circumstances.


The 00935 DTC code indicates an issue with the throttle position sensor, a critical component of a vehicle’s fuel injection system. Understanding the symptoms, causes, and troubleshooting steps outlined in this article will help you address this issue effectively. Remember to consult a professional mechanic if you are unsure about any part of the diagnosis or repair process.

About author


Meet Sam Mitchell, your experienced and reliable guide in the complex world of car fault codes. With a robust career spanning over 15 years as a professional car mechanic, John has the skills, knowledge, and practical experience to help you navigate car fault issues with confidence.


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