Engine-Codes - Generic - P0593

P0593 Code - Speed Control Switch 2 Circuit High

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- Repair Importance Level: 1/3
- Repair Difficulty Level: 2/3
Table of contents
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What are the Possible Causes of the DTC P0593?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Speed Control Switch
  • Speed Control Switch harness is open or shorted
  • Speed Control Switch circuit poor electrical connection
  • Faulty Clockspring

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).

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How to Fix the DTC P0593?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P0593 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

What Does the P0593 Code Mean?

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.

P0593 Code - Speed Control Switch 2 Circuit High

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Code P0593 Information for Specific Makes

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