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Engine-Codes – Generic – C1039

C1039 Code - Yaw Rate/G Sensor Assembly Internal Failure

Quick Answer

The C1039 diagnostic trouble code indicates a yaw rate/G sensor assembly internal failure within the vehicle's system. Common causes include Sensor wear and tear, Electrical malfunctions, Wiring 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
C1039 indicates Yaw Rate/G Sensor Assembly Internal Failure.
Common causes
Common causes include Sensor wear and tear, Electrical malfunctions, Wiring 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 08, 2024
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Code C1039 Description

The C1039 diagnostic trouble code indicates a yaw rate/G sensor assembly internal failure within the vehicle's system. The yaw rate sensor is responsible for measuring the angular velocity of the vehicle's rotation around its vertical axis. The G sensor, also known as the lateral acceleration sensor, measures the vehicle's lateral acceleration. Both sensors work together to provide crucial data for the vehicle's stability control system, ensuring optimal handling and safety while driving.

OBDII Code C1039 - Yaw Rate/G Sensor Assembly Internal Failure
C1039 Code - Yaw Rate/G Sensor Assembly Internal Failure

Common Causes of C1039

  1. Sensor wear and tear
  2. Electrical malfunctions
  3. Wiring issues
  4. Sensor calibration problems
  5. Impact or physical damage to the sensor assembly

Symptoms of C1039

  1. Illuminated ABS or stability control warning light on the dashboard
  2. Traction control system malfunction
  3. Reduced stability or control while driving
  4. Uneven braking or steering response
  5. Unexpected or erratic behavior during sudden maneuvers

How to Fix C1039

  1. Diagnose the specific sensor causing the issue using a professional diagnostic tool
  2. Inspect the sensor assembly for any physical damage or loose connections
  3. Replace the faulty sensor or sensors within the yaw rate/G sensor assembly
  4. Calibrate the new sensors to ensure proper functionality
  5. Test drive the vehicle to confirm that the stability control system is operating correctly

Cost to Fix C1039

The cost of repairing a yaw rate/G sensor assembly internal failure can vary depending on the make and model of the vehicle, as well as the specific sensors that need to be replaced. On average, the parts for this repair can range from $200 to $500, with additional labor costs of approximately $150 to $300. This brings the total estimated repair cost to around $350 to $800. However, it's important to note that these figures are rough estimates, and actual costs may vary based on the factors mentioned earlier. It's recommended to consult with a qualified mechanic or auto repair shop for a more accurate cost estimate based on your specific vehicle and location.

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Code C1039 Information for Specific Makes

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 C1039 Code

1. What are the common symptoms of OBDII code C1039 (Yaw Rate/G Sensor Assembly Internal Failure)?

- Common symptoms of this code may include stability control warning lights on the dashboard, loss of traction control functionality, and potential steering or handling issues.

2. What can cause the Yaw Rate/G Sensor Assembly Internal Failure code (C1039) to trigger?

- The code C1039 can be triggered by internal malfunctions within the yaw rate sensor or the G sensor, which are components responsible for measuring the vehicle's lateral and vertical movement.

3. How serious is the Yaw Rate/G Sensor Assembly Internal Failure code (C1039) issue?

- This issue can affect the vehicle's stability control system, potentially compromising the handling and safety of the vehicle, especially during abrupt maneuvers or adverse road conditions.

4. Can OBDII code C1039 (Yaw Rate/G Sensor Assembly Internal Failure) be fixed without professional help?

- Repairing or replacing the yaw rate sensor or G sensor typically requires specialized diagnostic equipment and technical expertise, so it is advisable to seek professional assistance for this issue.

5. Are there any DIY tips for troubleshooting OBDII code C1039 (Yaw Rate/G Sensor Assembly Internal Failure)?

- DIY troubleshooting tips for this code may include checking for loose connections, ensuring the sensors are properly mounted, and inspecting for any visible damage or corrosion on the sensor components.

6. How can I prevent the Yaw Rate/G Sensor Assembly Internal Failure code (C1039) from recurring?

- Regular maintenance, avoiding rough driving conditions, and promptly addressing any warning lights related to the stability control system can help prevent the recurrence of this code.

7. What are the potential risks of ignoring OBDII code C1039 (Yaw Rate/G Sensor Assembly Internal Failure)?

- Ignoring this code can lead to compromised vehicle stability and control, increasing the risk of accidents, especially in challenging driving situations where traction control and stability systems are crucial.

8. Is it safe to drive my vehicle with the Yaw Rate/G Sensor Assembly Internal Failure code (C1039) active?

- It is not recommended to drive the vehicle with this code active, as it may compromise the stability and control of the vehicle, posing a safety risk to both the driver and other road users.

9. How long does it typically take to repair OBDII code C1039 (Yaw Rate/G Sensor Assembly Internal Failure)?

- The repair time for this code can vary depending on the extent of the issue and the availability of replacement parts, but it is advisable to consult a professional technician for an accurate estimate.

10. Can resetting the OBDII system clear the Yaw Rate/G Sensor Assembly Internal Failure code (C1039)?

- While resetting the OBDII system may temporarily clear the code, it is essential to diagnose and address the underlying issue causing the fault to prevent the code from reoccurring.

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