• Uneven ride height
• Suspension warning light on
• Rough ride over bumps
• Faulty suspension position sensor
• Damaged wiring or connectors
• Malfunctioning control module
Suspension: A system of springs and shock absorbers that support a vehicle's weight and provide a smooth ride.
Position Sensor: A device that measures the position of a component and sends this information to the vehicle's control module.
• C0660
• C0662
This code means there's a problem with a part of the car that helps it stay level and smooth when driving over bumps.
The C0661 code indicates an issue with the suspension position sensor circuit.
C0661 is a diagnostic trouble code (DTC) for 'Level Control Compressor Relay Circuit Malfunction'. This code is set when the vehicle's control module detects an issue with the level control compressor relay circuit, which is responsible for adjusting the vehicle's suspension height.
• Check for any visible damage to the suspension components.
• Use a scan tool to read any other related codes.
• Inspect the wiring and connectors for damage or corrosion.
• Replace the faulty suspension position sensor.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the control module if necessary.
• OBD-II scan tool
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• Chevrolet Tahoe
• GMC Yukon
• Cadillac Escalade
• Regularly inspect suspension components for wear.
• Keep the vehicle's undercarriage clean to prevent corrosion.
• Schedule routine maintenance checks.
Suspension System Issue
• Avoid driving on rough terrain until repaired.
• Consult with a professional mechanic for diagnosis.
• Monitor for any changes in vehicle handling.
Check with the vehicle manufacturer for suspension system coverage.
This code has been associated with vehicles equipped with air suspension systems, particularly in GM models.
Moderate – Addressing this issue promptly can prevent further suspension damage.
Driving with a malfunctioning suspension system can affect vehicle handling and safety.
• Vehicle parked on a level surface
• Ignition in the 'On' position
The suspension position sensor is typically located near the vehicle's wheels or suspension components.
Q: Can I drive with the C0661 code?
A: It's not recommended, as it can affect vehicle handling and safety.
Q: How do I reset the C0661 code?
A: After repairs, use an OBD-II scanner to clear the code, but ensure the issue is fixed first.
