C0663 Buick Code - Level Control Exhaust Valve Circuit High
Quick Answer
The Automatic Level Control exhaust solenoid valve is switched ON or OFF by the Electronic Suspension Control (ESC) module. Common causes include Faulty Level Control Exhaust Valve, Level Control Exhaust Valve harness is open or shorted, Level Control Exhaust Valve 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
- C0663 Buick indicates Level Control Exhaust Valve Circuit High.
- Common causes
- Common causes include Faulty Level Control Exhaust Valve, Level Control Exhaust Valve harness is open or shorted, Level Control Exhaust Valve 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 C0663 Buick Description
What are the Possible Causes of the DTC C0663 Buick?
- Faulty Level Control Exhaust Valve
- Level Control Exhaust Valve harness is open or shorted
- Level Control Exhaust Valve circuit poor electrical connection
How to Fix the DTC C0663 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 C0663 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.
Need more information about the C0663 Buick code?
Need more information on how to fix the C0663 Buick code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the C0663 Buick code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about C0663 Buick Code
1. What does the OBDII code C0663 mean on a Buick?
The code C0663 indicates a problem with the Level Control Exhaust Valve Circuit, specifically a high voltage condition in the circuit.
2. What are common symptoms of the C0663 code?
Symptoms may include a sagging or uneven suspension, a warning light on the dashboard, or the air suspension system failing to adjust properly.
3. What causes the C0663 code on a Buick?
The most common causes are a faulty exhaust valve solenoid, damaged wiring or connectors in the circuit, or a malfunctioning air suspension control module.
4. How can I diagnose the C0663 code?
Diagnosis involves checking the exhaust valve solenoid for proper operation, inspecting wiring and connectors for damage, and testing the air suspension control module for faults.
5. Can I still drive my Buick with the C0663 code?
Yes, but ignoring the issue can lead to further suspension problems, reduced ride comfort, and uneven tire wear.
6. How do I fix the C0663 code on a Buick?
Repairs may include replacing the faulty exhaust valve solenoid, repairing or replacing damaged wiring, or reprogramming or replacing the air suspension control module.
7. How much does it cost to repair the C0663 code?
Repair costs vary but typically range from $100 to $500, depending on the specific part and labor required.
8. Can a blown fuse cause the C0663 code?
Yes, a blown fuse in the air suspension system can cause the circuit to lose power and trigger this code.
9. Does the C0663 code reset automatically after repairs?
In most cases, you’ll need to clear the code with an OBDII scanner after completing the necessary repairs.
10. Is the C0663 code specific to Buicks with air suspension?
Yes, this code is specific to vehicles equipped with an air suspension system that uses a level control exhaust valve.
Discuss the causes and fixes for C0663 Buick OBDII Code
Code C0663 Buick comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
