AutoCodesCadillac – C0590 Cadillac

C0590 Cadillac Code - Right Rear Shock Absorber Actuator Circuit

Quick Answer

The Suspension Control Module commands variable levels of current to each shock absorber actuator in response to rough road, braking, or abrupt steering maneuver driving conditions. Common causes include Faulty Right Rear Shock Absorber Actuator, Right Rear Shock Absorber Actuator harness is open or shorted, Right Rear Shock Absorber Actuator 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
C0590 Cadillac indicates Right Rear Shock Absorber Actuator Circuit.
Common causes
Common causes include Faulty Right Rear Shock Absorber Actuator, Right Rear Shock Absorber Actuator harness is open or shorted, Right Rear Shock Absorber Actuator 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 11,120
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 16, 2023
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Code C0590 Cadillac Description

The Suspension Control Module commands variable levels of current to each shock absorber actuator in response to rough road, braking, or abrupt steering maneuver driving conditions. The current variation is performed by pulse width modulation (PWM) of the system voltage. The Suspension Control Module continuously measures the actual current of each actuator. When a deviation between commanded and actual current is detected, a Diagnostic Trouble Code (DTC) is set.
OBDII Code C0590 Cadillac - Right Rear Shock Absorber Actuator Circuit - AutoCodes.com
C0590 Cadillac Code - Right Rear Shock Absorber Actuator Circuit

What are the Possible Causes of the DTC C0590 Cadillac?

  • Faulty Right Rear Shock Absorber Actuator
  • Right Rear Shock Absorber Actuator harness is open or shorted
  • Right Rear Shock Absorber Actuator circuit poor electrical connection
  • Faulty Suspension Control Module

How to Fix the DTC C0590 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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C0590 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 C0590 Cadillac Code

1. What does the OBDII code C0590 mean on a Cadillac?

C0590 indicates an issue with the right rear shock absorber actuator circuit, typically related to the vehicle's electronic suspension system.

2. What are the common symptoms of the C0590 code?

Symptoms may include a suspension warning light on the dashboard, a noticeable change in ride quality, or the vehicle leaning to one side.

3. What causes the C0590 code to appear?

Common causes include a faulty shock absorber actuator, damaged wiring or connectors, or a malfunctioning suspension control module.

4. Can I drive my Cadillac with the C0590 code?

While the vehicle may still be drivable, it could have compromised ride comfort and handling. It’s best to address the issue as soon as possible to avoid further damage.

5. How do I diagnose the C0590 code?

Start by inspecting the wiring and connectors for the right rear shock absorber actuator. Use a scan tool to check for related codes and test the actuator’s functionality.

6. How can I fix the C0590 code?

Repairs might involve replacing the right rear shock absorber actuator, repairing damaged wiring, or reprogramming the suspension control module if necessary.

7. How much does it cost to fix the C0590 code?

Repair costs can vary but typically range from $200 to $800, depending on whether the actuator, wiring, or control module needs replacement.

8. Can I reset the C0590 code without repairs?

Clearing the code with a scan tool may work temporarily, but if the underlying issue is not addressed, the code will likely return.

9. What tools do I need to troubleshoot the C0590 code?

You’ll need an OBDII scan tool, a multimeter to test electrical connections, and possibly a service manual for your Cadillac model.

10. Is the C0590 code common on Cadillacs?

Yes, it can occur on Cadillacs equipped with electronic suspension systems, especially as components age or if exposed to harsh driving conditions.

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