AutoCodes – Generic – C0655

C0655 Code - Level Control Compressor Relay Malfunction

Quick Answer

The automatic level control adjusts the vehicle suspension ride height. Common causes include Faulty Level Control Compressor Relay, Level Control Compressor Relay harness is open or shorted, Level Control Compressor Relay 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: C0655 indicates Level Control Compressor Relay Malfunction.
Common causes: Common causes include Faulty Level Control Compressor Relay, Level Control Compressor Relay harness is open or shorted, Level Control Compressor Relay 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.

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Code Popularity 3,372

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 31, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C0655 Description

The automatic level control adjusts the vehicle suspension ride height. The Rear Integration Module (RIM) determines the height of the vehicle based on the voltage from the automatic level control sensor. The RIM grounds the compressor relay and the exhaust control solenoid to raise and lower the vehicle in order to keep the vehicle level

OBDII Code C0655 - Level Control Compressor Relay Malfunction - AutoCodes.com — C0655 Code - Level Control Compressor Relay Malfunction

What does this mean?

What are the Possible Causes of the DTC C0655?

Faulty Level Control Compressor Relay
Level Control Compressor Relay harness is open or shorted
Level Control Compressor Relay circuit poor electrical connection

How to Fix the DTC C0655?

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 C0655 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 C0655 code?

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Need Help with the Code?

Get the C0655 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C0655 Buick — Level Control Compressor Relay Malfunction
C0655 Cadillac — Level Control Compressor Relay Malfunction
C0655 Chevrolet — Level Control Compressor Relay Malfunction
C0655 GMC — Level Control Compressor Relay Malfunction

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 C0655 Code

1. What are the common symptoms of OBDII code C0655 (Level Control Compressor Relay Malfunction)?

- Common symptoms include the vehicle's suspension system not functioning properly, uneven ride height, and the compressor not engaging.

2. What are the common causes of OBDII code C0655?

- The common causes of this code include a faulty level control compressor relay, damaged wiring or connectors in the system, or issues with the compressor itself.

3. How can I diagnose the level control compressor relay malfunction?

- Diagnosing this issue typically involves using a scan tool to retrieve the OBDII code, checking the compressor relay for proper operation, and inspecting the wiring and connectors for any damage.

4. Can I still drive my vehicle with OBDII code C0655 present?

- It is not recommended to drive your vehicle with this code present, as it can affect the suspension system's performance and potentially lead to further damage.

5. How can I repair OBDII code C0655?

- Repairing this code usually involves replacing the faulty level control compressor relay, repairing any damaged wiring or connectors, and ensuring the compressor is functioning correctly.

6. Will resetting the OBDII code C0655 make it go away permanently?

- Resetting the code may temporarily clear it, but if the underlying issue causing the malfunction is not addressed, the code is likely to return.

7. Is it safe to continue driving if the compressor is not engaging due to OBDII code C0655?

- It is not safe to continue driving if the compressor is not engaging, as it can lead to problems with the vehicle's suspension system and impact its handling.

8. Can a DIY enthusiast repair OBDII code C0655 at home?

- Depending on your automotive repair skills and access to tools, you may be able to address this issue at home by replacing the level control compressor relay and checking the wiring.

9. How do I prevent OBDII code C0655 from occurring in the future?

- Regularly inspecting and maintaining your vehicle's suspension system, checking the compressor relay and wiring for any signs of wear, and addressing any issues promptly can help prevent this code from occurring.

10. Does OBDII code C0655 affect the vehicle's overall performance?

- While the code itself may not directly impact the vehicle's engine performance, it can affect the suspension system's operation, leading to a less comfortable ride and potential safety concerns.