What is an OBD2 code?

An OBD2 (On-Board Diagnostics) code is a diagnostic trouble code (DTC) generated by your vehicle's computer system when it detects a problem. These codes help identify specific issues with your vehicle's engine, transmission, emissions, or other systems.

How do I read OBD2 codes?

To read OBD2 codes, you'll need an OBD2 scanner. Plug it into your vehicle's OBD2 port (usually located under the dashboard), turn your key to the 'ON' position, and follow your scanner's instructions to retrieve the codes. Each code starts with a letter (P, B, C, or U) followed by four numbers.

What do the different types of OBD2 codes mean?

OBD2 codes are categorized by their first letter: P (Powertrain) for engine and transmission issues, B (Body) for interior systems like airbags, C (Chassis) for mechanical systems like brakes, and U (Network) for computer and module communication problems.

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Home » OBD2 Codes » C0655

Code C0655

Symptoms

• Warning light on the dashboard

• Uneven ride height

• Rough or uncomfortable ride

Common Causes

• Faulty ride height sensor

• Damaged wiring or connectors

• Defective Electronic Suspension Control module

Glossary

ESC: Electronic Suspension Control

OBD-II: On-Board Diagnostics II

Related Codes

• C0650

• C0660

Laymans terms

This code means that there's a problem with the car's suspension system, which helps make the ride smooth and comfortable.

Explanation

C0655 indicates a malfunction in the ride height control system.

Technical description

The C0655 code is triggered when the Electronic Suspension Control (ESC) module detects an issue with the ride height sensor or related components, which are responsible for maintaining the vehicle's proper ride height.

Diagnosis steps

• Inspect the ride height sensor and its wiring for damage.

• Check the ESC module for fault codes.

• Test the ride height sensor for proper operation.

Repair procedures

• Replace the faulty ride height sensor.

• Repair or replace damaged wiring or connectors.

• Replace the ESC 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.

• Ensure wiring and connectors are secure and undamaged.

• Perform routine maintenance checks.

Error code type

Sensor Issue

User experience recommendations

• Have the suspension system inspected regularly.

• Address any suspension warning lights promptly.

Warranty information

Check with your vehicle manufacturer for specific warranty coverage on suspension components.

Historical data

This code has been associated with issues in vehicles with advanced suspension systems, particularly in SUVs and luxury vehicles.

Urgency level

Moderate – It is advisable to address this issue soon to avoid further suspension problems.

Legal and safety notice

Ignoring suspension issues can lead to unsafe driving conditions. Always address warning lights promptly.

Testing conditions

• Vehicle parked on a level surface

• Ignition in the 'On' position

Component location

The ride height sensor is typically located near the suspension components, often attached to the control arm or frame.

FAQs

Q: What happens if I ignore the C0655 code?
A: Ignoring this code can lead to a rough ride and potential damage to other suspension components.

Q: Can I drive with a C0655 code?
A: While you may be able to drive, it's best to have the issue checked to ensure safety and comfort.

Last updated: Feb 15, 2026 • Source: internal database

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