AutoCodes – Generic – C0631

C0631 Code - Right Rear Height Air Suspension Sensor Voltage

Quick Answer

The Air Suspension Sensor provides a signal voltage between 0.3 and 4.7 volts to the Air Suspension Module. Common causes include Faulty Right Rear Height Air Suspension Sensor, Right Rear Air Suspension Sensor harness is open or shorted, Right Rear Air Suspension Sensor circuit poor electrical connection. 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
C0631 indicates Right Rear Height Air Suspension Sensor Voltage.
Common causes
Common causes include Faulty Right Rear Height Air Suspension Sensor, Right Rear Air Suspension Sensor harness is open or shorted, Right Rear Air Suspension Sensor circuit poor electrical connection.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 3,264
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 30, 2020
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Code C0631 Description

The Air Suspension Sensor provides a signal voltage between 0.3 and 4.7 volts to the Air Suspension Module. This signal voltage represents the wheel's position relative to the body. The Air Suspension Module provides a 5 volt reference and a low reference to the sensor.
OBDII Code C0631 - Right Rear Height Air Suspension Sensor Voltage - AutoCodes.com
C0631 Code - Right Rear Height Air Suspension Sensor Voltage

What are the Possible Causes of the DTC C0631?

  • Faulty Right Rear Height Air Suspension Sensor
  • Right Rear Air Suspension Sensor harness is open or shorted
  • Right Rear Air Suspension Sensor circuit poor electrical connection

How to Fix the DTC C0631?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C0631 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the C0631 code?

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Need Help with the Code?

Get the C0631 code diagnosed by a professional: Find a repair shop in your area

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 C0631 Code

1. What are common symptoms of OBDII code C0631 (Right Rear Height Air Suspension Sensor Voltage)?

The common symptoms include uneven ride height, a noticeable lean to one side of the vehicle, and potential issues with the vehicle's handling and stability.

2. What are the possible causes of OBDII code C0631?

Possible causes of this code include a faulty right rear height air suspension sensor, wiring or connector issues related to the sensor, or problems with the air suspension system itself.

3. How can I diagnose the root cause of OBDII code C0631?

Diagnosing the issue typically involves using a scan tool to read the code and inspecting the right rear height air suspension sensor, its wiring, and the connections for any signs of damage or malfunction.

4. Can I drive my vehicle with OBDII code C0631?

It is not recommended to drive your vehicle with this code present, as it can affect the overall performance and safety of the vehicle. It is best to address the issue promptly.

5. What are some repair tips for fixing OBDII code C0631?

Repair tips may include checking and replacing the right rear height air suspension sensor, inspecting and repairing any damaged wiring or connectors, and ensuring the proper functioning of the air suspension system.

6. How much does it typically cost to fix OBDII code C0631?

The cost of fixing this code can vary depending on the root cause of the issue, the required repairs, and labor costs. It is recommended to consult with a professional mechanic for an accurate estimate.

7. Can OBDII code C0631 be cleared/reset without fixing the underlying issue?

While you can clear the code temporarily, it is crucial to address the root cause of the problem to prevent it from reoccurring and ensure the proper functioning of the air suspension system.

8. Are there any preventive measures to avoid OBDII code C0631 in the future?

Regular maintenance of the air suspension system, including inspections of the height sensors and their connections, can help prevent issues that may trigger this code.

9. How long does it typically take to repair OBDII code C0631?

The repair time can vary depending on the complexity of the issue and the availability of parts. Simple sensor replacements may take a few hours, while more extensive repairs could take longer.

10. Is it safe to ignore OBDII code C0631 if the vehicle seems to be driving normally?

Even if the vehicle appears to be driving normally, it is not recommended to ignore this code, as it can lead to further suspension problems and compromise the safety and performance of the vehicle in the long run.

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