C0655 Buick 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 Buick 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.
Code C0655 Buick Description
What are the Possible Causes of the DTC C0655 Buick?
- 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 Buick?
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 Buick 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.
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Frequently Asked Questions about C0655 Buick Code
1. What does the OBDII code C0655 mean on a Buick?
C0655 indicates a Level Control Compressor Relay Malfunction, meaning there is an issue with the air suspension system’s compressor relay or its circuit.
2. What are the common symptoms of a C0655 code on a Buick?
Symptoms include a sagging or uneven suspension, a "Service Suspension System" warning on the dashboard, or the air compressor failing to activate.
3. What causes the C0655 code to appear on a Buick?
Possible causes include a faulty compressor relay, damaged wiring or connectors in the relay circuit, a malfunctioning air suspension compressor, or a blown fuse.
4. Can I drive my Buick with a C0655 code?
While the vehicle may still be drivable, prolonged driving with this issue can lead to uneven tire wear, reduced ride comfort, and potential damage to other suspension components.
5. How do I diagnose a C0655 code on my Buick?
Start by inspecting the compressor relay, wiring, and connectors for damage or corrosion. Use a multimeter to test the relay and check for proper voltage in the circuit.
6. What tools are needed to fix the C0655 code on a Buick?
You may need a multimeter, OBDII scanner, basic hand tools, and possibly a wiring diagram for the air suspension system.
7. How do I reset the C0655 code after repairing the issue?
Use an OBDII scanner to clear the code. If the underlying problem is fixed, the code should not return.
8. How much does it cost to repair a C0655 code on a Buick?
Repair costs vary depending on the issue. Replacing a relay typically costs $20–$50 for the part, while diagnosing or fixing wiring or compressor issues may cost $100–$500.
9. Can a blown fuse trigger the C0655 code on a Buick?
Yes, a blown fuse in the air suspension system can prevent the compressor relay from functioning, triggering this code.
10. How can I prevent the C0655 code from reoccurring?
Regularly inspect the air suspension components, keep electrical connectors clean and secure, and address any suspension system warnings promptly.
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