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C1172 Mercedes-Benz Code - Steering Angle Sensor Internal Fault

Quick Answer

The C1172 code for Mercedes-Benz indicates a problem with the steering angle sensor internal fault. Common causes include Faulty steering angle sensor, Damaged wiring or connectors, Corrosion or moisture affecting sensor performance. 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
C1172 Mercedes-Benz indicates Steering Angle Sensor Internal Fault.
Common causes
Common causes include Faulty steering angle sensor, Damaged wiring or connectors, Corrosion or moisture affecting sensor performance.
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 C1172 Mercedes-Benz Description

The C1172 code for Mercedes-Benz indicates a problem with the steering angle sensor internal fault. The steering angle sensor is a critical component of the vehicle's stability control system, as it provides crucial data on the position of the steering wheel and the vehicle's direction. When this sensor malfunctions, it can lead to inaccurate data being sent to the vehicle's control modules, affecting the performance of various systems such as the traction control, stability control, and adaptive headlights.

OBDII Code C1172 Mercedes-Benz - Steering Angle Sensor Internal Fault
C1172 Mercedes-Benz Code - Steering Angle Sensor Internal Fault

Common Causes of C1172 Mercedes-Benz

  1. Faulty steering angle sensor.
  2. Damaged wiring or connectors.
  3. Corrosion or moisture affecting sensor performance.
  4. Issues with control modules receiving data from the sensor.
  5. Electrical system malfunctions.

Symptoms of C1172 Mercedes-Benz

  1. ABS or stability control warning lights illuminated on the dashboard.
  2. Traction control system engaging unexpectedly or not working properly.
  3. Steering wheel feeling off-center or not responding accurately.
  4. Erratic behavior of adaptive headlights.
  5. Loss of power steering assistance.

How to Fix C1172 Mercedes-Benz

  1. Diagnose the issue using a diagnostic scanner to confirm the C1172 code and pinpoint the exact cause of the internal fault.
  2. Inspect the wiring and connectors for any damage or corrosion, repairing or replacing as necessary.
  3. Test the steering angle sensor to determine if it is functioning correctly; if not, replace the sensor.
  4. Clear the fault code and reset the system to ensure the issue has been resolved.
  5. Perform a road test to verify that the steering angle sensor is now providing accurate data and that all warning lights have been cleared.

Cost to Fix C1172 Mercedes-Benz

The typical repair costs for addressing a steering angle sensor internal fault can vary depending on the extent of the issue and the specific components that need to be replaced. Generally, the cost of a new steering angle sensor can range from $150 to $400, with additional labor costs of around $100 to $200. Overall, the total repair cost for this issue could range from $250 to $600, excluding any diagnostic fees that may apply. It is recommended to get a detailed quote from a trusted auto repair shop to get an accurate estimate based on the specific circumstances of your vehicle.

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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 C1172 Mercedes-Benz Code

1. What are the common symptoms of OBDII code C1172 in a Mercedes-Benz related to the steering angle sensor internal fault?

- Common symptoms include the illumination of the ESP (Electronic Stability Program) warning light, ABS (Antilock Braking System) warning light, and the malfunction of stability control features.

2. What causes the OBDII code C1172 related to the steering angle sensor internal fault in a Mercedes-Benz?

- The code C1172 is typically triggered by a malfunction or internal fault within the steering angle sensor itself, which can be caused by wiring issues, sensor calibration problems, or sensor failure.

3. How can I diagnose the OBDII code C1172 in my Mercedes-Benz for the steering angle sensor internal fault?

- Diagnosis involves using a professional OBDII scanner to retrieve the specific fault code and then performing further testing on the steering angle sensor and related components to identify the root cause of the internal fault.

4. Is it safe to drive my Mercedes-Benz with the OBDII code C1172 indicating a steering angle sensor internal fault?

- It is not recommended to drive the vehicle with the code C1172 present, as it can affect the stability control system and compromise the overall safety of the vehicle. Immediate attention and repair are advised.

5. Can I reset the OBDII code C1172 related to the steering angle sensor internal fault in my Mercedes-Benz without fixing the issue?

- Resetting the code without addressing the underlying problem will only temporarily clear the warning lights. The issue will persist, and the code is likely to reappear once the system detects the fault again.

6. How can I repair the steering angle sensor internal fault triggering the OBDII code C1172 in my Mercedes-Benz?

- Repairing the steering angle sensor internal fault may involve recalibrating or replacing the sensor, checking and repairing any damaged wiring, or addressing any other issues identified during the diagnostic process.

7. Can a DIY enthusiast fix the OBDII code C1172 for the steering angle sensor internal fault in a Mercedes-Benz?

- While some basic troubleshooting steps can be taken by a DIY enthusiast, diagnosing and repairing the steering angle sensor internal fault may require specialized tools and expertise. It is recommended to consult a professional mechanic for proper diagnosis and repair.

8. Will fixing the steering angle sensor internal fault causing the OBDII code C1172 resolve all related warning lights in my Mercedes-Benz?

- Addressing the steering angle sensor internal fault should resolve the specific code C1172 and associated warning lights related to the stability control system. However, other issues may trigger additional warning lights that require separate diagnosis and repair.

9. How much does it typically cost to repair the steering angle sensor internal fault leading to the OBDII code C1172 in a Mercedes-Benz?

- The cost of repairing the steering angle sensor internal fault can vary depending on the extent of the issue, the need for sensor recalibration or replacement, and labor costs. It is advisable to obtain estimates from reputable repair shops.

10. Can a faulty steering angle sensor internal fault triggering the OBDII code C1172 affect the overall performance of my Mercedes-Benz?

- Yes, a malfunctioning steering angle sensor can impact the performance and safety features of your Mercedes-Benz by affecting stability control, ABS functionality, and overall handling. It is crucial to address the issue promptly.

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