AutoCodes – RAM – P0593 RAM

P0593 RAM Code - Speed Control Switch 2 Circuit High

Quick Answer

The Powertrain Control Module (PCM) monitors the Speed Control Switch 2. Common causes include Faulty Speed Control Switch, Speed Control Switch harness is open or shorted, Speed Control Switch circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: P0593 RAM indicates Speed Control Switch 2 Circuit High.
Common causes: Common causes include Faulty Speed Control Switch, Speed Control Switch harness is open or shorted, Speed Control Switch circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 402

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 06, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P0593 RAM Description

The Powertrain Control Module (PCM) monitors the Speed Control Switch 2. The Diagnostic Trouble Code (DTC) will be set when the PCM has detected that the speed control switch 2 is above the maximum acceptable voltage range.

OBDII Code P0593 RAM - Speed Control Switch 2 Circuit High - AutoCodes.com — P0593 RAM Code - Speed Control Switch 2 Circuit High

What does this mean?

What are the Possible Causes of the DTC P0593 RAM?

Faulty Speed Control Switch
Speed Control Switch harness is open or shorted
Speed Control Switch circuit poor electrical connection
Faulty Clockspring

How to Fix the DTC P0593 RAM?

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 does this mean?

Code Tech Notes

The steering wheel Clockspring is one of the most common problems for the P0593. The circuit inside the Clockspring failed causing an open circuit between the Speed Control Switch and the Powertrain Control Module (PCM).

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0593 RAM 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 P0593 RAM code?

Need more information on how to fix the P0593 RAM code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0593 RAM code diagnosed by a professional: Find a repair shop in your area

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.