AutoCodes – Generic – C0593

C0593 Code - Right Rear Solenoid Circuit High

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 Right Rear Solenoid, Right Rear Solenoid harness is open or shorted, Right 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: C0593 indicates Right Rear Solenoid Circuit High.
Common causes: Common causes include Faulty Right Rear Solenoid, Right Rear Solenoid harness is open or shorted, Right 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 1,244

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 29, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C0593 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 C0593 - Right Rear Solenoid Circuit High - AutoCodes.com — C0593 Code - Right Rear Solenoid Circuit High

What does this mean?

What are the Possible Causes of the DTC C0593?

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

How to Fix the DTC C0593?

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 C0593 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.

Need more information about the C0593 code?

Need more information on how to fix the C0593 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C0593 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C0593 Buick — Right Rear Solenoid Circuit High
C0593 Cadillac — Right Rear Solenoid Circuit High
C0593 Chevrolet — Right Rear Solenoid Circuit High
C0593 GMC — Right Rear Solenoid Circuit High

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 C0593 Code

1. What are the common symptoms of OBDII code C0593 (Right Rear Solenoid Circuit High)?

The common symptoms include issues with the right rear brake system, such as uneven braking, brake dragging, or the ABS system activating unexpectedly.

2. What are the potential causes of OBDII code C0593?

The code C0593 is typically triggered by a malfunction in the right rear solenoid circuit, which may be caused by a faulty solenoid, damaged wiring, or a poor connection.

3. How can I diagnose the cause of OBDII code C0593?

Diagnosing the cause of C0593 involves using a scan tool to retrieve the code, inspecting the right rear solenoid and its wiring for damage, and testing the electrical connections for proper voltage and continuity.

4. Can I drive my vehicle with OBDII code C0593?

It is not recommended to drive your vehicle with code C0593, as it may affect the performance of the right rear brake system and compromise your safety on the road.

5. How can I repair OBDII code C0593?

Repairing code C0593 involves identifying and fixing the underlying issue with the right rear solenoid circuit, which may require replacing the solenoid, repairing damaged wiring, or addressing any connection issues.

6. Is it possible to reset OBDII code C0593 without fixing the issue?

While you can clear the code temporarily with a scan tool, it will likely reappear until the root cause of the problem is resolved.

7. Can a DIY enthusiast fix OBDII code C0593 at home?

Depending on your level of expertise, you may be able to diagnose and repair code C0593 at home. However, dealing with brake system components requires caution and proper knowledge to ensure safety and effectiveness.

8. Are there any safety precautions to consider when working on OBDII code C0593?

When working on code C0593 related to the right rear brake system, always prioritize safety by disconnecting the battery, using proper tools, and following manufacturer guidelines to prevent accidents or injuries.

9. How long does it typically take to repair OBDII code C0593?

The repair time for code C0593 can vary depending on the exact cause of the issue, but it may take anywhere from one to several hours to diagnose and fix the problem effectively.

10. Can OBDII code C0593 affect other systems in the vehicle?

While code C0593 specifically relates to the right rear solenoid circuit, unresolved issues with the brake system can potentially impact overall vehicle performance and safety.