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Code C0605

Symptoms

• Warning light on the dashboard

• Vehicle leaning to one side

• Uneven ride height

Common Causes

• Faulty level control sensor

• Damaged wiring or connectors

• Faulty suspension control module

Glossary

Sensor: A device that detects or measures a physical property and records, indicates, or otherwise responds to it.

Module: A self-contained component of a system, often with a specific function.

Related Codes

• C0600

• C0610

Laymans terms

This code means that the car's computer is having trouble with one of the sensors that help it know if the car is level or not.

Explanation

The C0605 code indicates a problem with the level control sensor circuit.

Technical description

The C0605 code is triggered when the vehicle's suspension control module detects a malfunction in the level control sensor circuit, which is responsible for monitoring the vehicle's height and ensuring it remains level.

Diagnosis steps

• Inspect the level control sensor and its wiring for damage.

• Check the connectors for corrosion or poor connections.

• Test the suspension control module for faults.

Repair procedures

• Replace the faulty level control sensor.

• Repair or replace damaged wiring or connectors.

• Replace the suspension control module if necessary.

Tools required

• OBD-II scanner

• Multimeter

• Basic hand tools

Estimated repair cost

$150 - $500

Difficulty level

Moderate

Commonly affected vehicles

• Chevrolet Tahoe

• GMC Yukon

• Cadillac Escalade

Preventive measures

• Regularly inspect suspension components.

• Keep vehicle undercarriage clean to prevent corrosion.

• Check for recalls or service bulletins related to the suspension system.

Error code type

Sensor Issue

User experience recommendations

• Have the suspension system checked regularly.

• Address any warning lights promptly to avoid further damage.

Warranty information

Check vehicle warranty for coverage on suspension components.

Historical data

This code has been associated with issues in vehicles with air suspension systems, particularly in models with higher mileage.

Urgency level

Moderate – It should be addressed soon to ensure vehicle stability and comfort.

Legal and safety notice

Driving with a malfunctioning suspension system can affect vehicle handling and safety.

Testing conditions

• Vehicle parked on a level surface

• Ignition in the 'on' position

Component location

The level control sensor is typically located near the vehicle's suspension components, often near the wheels.

FAQs

Q: Can I drive with the C0605 code?
A: While it may be possible to drive, it is not recommended as it can affect vehicle stability and comfort.

Q: How do I reset the C0605 code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue is fixed, it should not return.

Last updated: Mar 2, 2026 • Source: internal database
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