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P1597 Dodge Code - Speed Control Switch Always Low

Quick Answer

The P1597 Dodge code indicates that the Speed Control Switch is always registering a low signal. Common causes include Faulty speed control switch, Wiring or connection issue in the cruise control system, Faulty cruise control module. 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
P1597 Dodge indicates Speed Control Switch Always Low.
Common causes
Common causes include Faulty speed control switch, Wiring or connection issue in the cruise control system, Faulty cruise control module.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1597 Dodge Description

The P1597 Dodge code indicates that the Speed Control Switch is always registering a low signal. The speed control switch is a component of the vehicle's cruise control system, which allows the driver to set a desired speed for the vehicle to maintain automatically. When this switch is always low, it means that the system is unable to properly read or interpret the input from the switch, leading to issues with cruise control functionality.

OBDII Code P1597 Dodge - Speed Control Switch Always Low
P1597 Dodge Code - Speed Control Switch Always Low

Common Causes of P1597 Dodge

  1. Faulty speed control switch
  2. Wiring or connection issue in the cruise control system
  3. Faulty cruise control module
  4. Electrical problem in the system
  5. Corrosion or damage to the cruise control components

Symptoms of P1597 Dodge

  1. Inoperative cruise control system
  2. Cruise control system engages intermittently
  3. Cruise control setting unable to be maintained
  4. Check Engine Light may be illuminated

How to Fix P1597 Dodge

  1. Begin by diagnosing the issue with a scan tool to confirm the P1597 code
  2. Inspect the speed control switch and wiring for any visible damage or corrosion
  3. Test the cruise control module to ensure it is receiving the proper signal
  4. Replace the speed control switch if faulty
  5. Clear the code and test the cruise control system for proper functionality

Cost to Fix P1597 Dodge

The cost of repairing a P1597 Dodge code can vary depending on the specific cause of the issue. In general, replacing a faulty speed control switch can range from $100 to $200, including parts and labor. Additional costs may be incurred if there are other underlying issues in the cruise control system that need to be addressed. It is recommended to consult with a trusted mechanic or dealership to get an accurate estimate based on the specific circumstances of your vehicle.

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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.

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