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C0589 Cadillac Code - Left Rear Solenoid Circuit Open

Quick Answer

The strut actuator is controlled by the Continuously Variable Road Sensing Suspension (CVRSS) module with a Pulse-Width Modulation (PWM) signal. Common causes include Faulty Left Rear Solenoid, Left Rear Solenoid harness is open or shorted, Left Rear Solenoid 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
C0589 Cadillac indicates Left Rear Solenoid Circuit Open.
Common causes
Common causes include Faulty Left Rear Solenoid, Left Rear Solenoid harness is open or shorted, Left Rear Solenoid 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.
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Code Popularity 2,600
How popular is this code, among other codes? Low
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Table of contents Created and updated by William Orellana on Jul 29, 2020
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Code C0589 Cadillac Description

The strut actuator is controlled by the Continuously Variable Road Sensing Suspension (CVRSS) module with a Pulse-Width Modulation (PWM) signal. Switching the voltage ON and OFF at a high frequency, or pulse width modulation of 2.0 kHz, controls the amount of current delivered to the actuator. By controlling the amount of current to the actuator the CVRSS module controls the damping force in the strut. A higher level of damping force is achieved by providing correspondingly higher current levels, relating to higher percentages of PWM duty cycle. The default damper state, no battery voltage is one that provides a minimum damping force. The CVRSS module periodically commands each strut actuator to a preset PWM duty cycle in order to override the normal PWM command. During this preset PWM duty cycle, the CVRSS module is able to perform a diagnostic test on each strut actuator to determine if a malfunction is present. The preset PWM command can be either an OFF or ON state duty cycle.
OBDII Code C0589 Cadillac - Left Rear Solenoid Circuit Open - AutoCodes.com
C0589 Cadillac Code - Left Rear Solenoid Circuit Open
What does this mean?

What are the Possible Causes of the DTC C0589 Cadillac?

  • Faulty Left Rear Solenoid
  • Left Rear Solenoid harness is open or shorted
  • Left Rear Solenoid circuit poor electrical connection

How to Fix the DTC C0589 Cadillac?

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 C0589 Cadillac 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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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about C0589 Cadillac Code

1. What does the OBDII code C0589 mean on a Cadillac?

C0589 indicates an issue with the left rear solenoid circuit, specifically that it is open or has a break in the electrical connection.

2. What are the common symptoms of the C0589 code?

Symptoms may include a suspension warning light on the dashboard, poor or uneven ride quality, and reduced performance of the suspension system.

3. What causes the C0589 code to appear?

Possible causes include a damaged or disconnected wiring harness, a failed left rear suspension solenoid, a blown fuse, or corrosion in the electrical connectors.

4. Can I drive my Cadillac with the C0589 code active?

While the vehicle may still be drivable, the suspension system may not function properly, leading to a rougher or less stable ride. It’s best to fix the issue promptly.

5. How do I diagnose the C0589 code?

Start by visually inspecting the wiring and connectors near the left rear solenoid. Use a multimeter to test for continuity in the circuit and verify power and ground connections.

6. What is the left rear solenoid responsible for?

The left rear solenoid is part of the electronic suspension system and helps control the damping or height adjustments for the left rear wheel.

7. How much does it cost to repair a C0589 code on a Cadillac?

The cost can vary depending on the issue, but replacing a suspension solenoid typically costs $200–$600, while wiring repairs may be less expensive.

8. Can a blown fuse cause the C0589 code?

Yes, a blown fuse in the suspension system can cause the circuit to open, triggering the C0589 code.

9. How can I prevent the C0589 code from recurring?

Regularly inspect and maintain the suspension system, clean corroded connectors, and address any wiring issues promptly to avoid future problems.

10. Do I need special tools to fix the C0589 code?

You may need a multimeter for electrical testing and a scan tool to clear the code after the repair. Some repairs may also require basic hand tools.

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