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AutoCodes - Generic - P0591

P0591 Code - Speed Control Multiplexed Switch Performance

- Code Popularity: 11,027 Views
- Repair Importance Level: 1/3
- Repair Difficulty Level: 2/3
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What are the Possible Causes of the DTC P0591?

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
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How to Fix the DTC P0591?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0591 code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

Code P0591 Description

The Powertrain Control Module (PCM) monitors the Speed Control Multiplexed Switch. The Diagnostic Trouble Code (DTC) will set when the Powertrain Control Module detects that the Speed Control signal voltage is implausible.

OBDII Code P0591 - Speed Control Multiplexed Switch Performance - AutoCodes.com
P0591 Code - Speed Control Multiplexed Switch Performance

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Code P0591 comments

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