Engine-CodesFord – P1566 Ford

P1566 Ford Code - Speed Control Command Switch Out of Range Low

Quick Answer

The P1566 Ford diagnostic trouble code (DTC) refers to the speed control command switch being out of range low. Common causes include Faulty speed control command switch, Wiring issues or electrical shorts in the cruise control system, Malfunctioning control module. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means
P1566 Ford indicates Speed Control Command Switch Out of Range Low.
Common causes
Common causes include Faulty speed control command switch, Wiring issues or electrical shorts in the cruise control system, Malfunctioning control module.
Severity
Moderate - service should be scheduled soon.
Can I drive?
The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1566 Ford Description

The P1566 Ford diagnostic trouble code (DTC) refers to the speed control command switch being out of range low. In simpler terms, this code indicates that there is an issue with the speed control system in the vehicle, specifically related to the command switch, which is used to set and adjust the desired speed of the vehicle. The speed control system, also known as cruise control, allows the driver to maintain a constant speed without having to manually press the accelerator pedal. When the speed control command switch is out of range low, it means that the signal being sent to the control module is below the expected range, causing the system to malfunction.

OBDII Code P1566 Ford - Speed Control Command Switch Out of Range Low
P1566 Ford Code - Speed Control Command Switch Out of Range Low

Common Causes of P1566 Ford

  1. Faulty speed control command switch
  2. Wiring issues or electrical shorts in the cruise control system
  3. Malfunctioning control module
  4. Blown fuse related to the speed control system
  5. Software glitches in the vehicle's computer system

Symptoms of P1566 Ford

  1. Inoperative cruise control system
  2. Speed control light on the dashboard illuminated
  3. Difficulty setting or maintaining a constant speed
  4. Intermittent or erratic behavior of the cruise control system

How to Fix P1566 Ford

  1. Diagnose the issue using a diagnostic scanner to retrieve the specific trouble code and pinpoint the source of the problem.
  2. Inspect the speed control command switch, wiring, and control module for any visible damage or loose connections.
  3. Test the components of the cruise control system, such as the switch, control module, and electrical connections, for proper functionality.
  4. Replace any faulty components, such as the speed control command switch or control module, and ensure all connections are secure.
  5. Clear the trouble code from the vehicle's computer system and test the cruise control system to verify that the issue has been resolved.

Cost to Fix P1566 Ford

The typical repair costs for addressing a P1566 Ford code can vary depending on the specific cause of the issue and the required repairs. In general, the cost of replacing a speed control command switch or control module can range from $150 to $500, including parts and labor. Additional costs may apply if there are wiring issues that need to be repaired or if other components of the cruise control system require attention. It is important to consult with a qualified mechanic or auto repair shop to get an accurate estimate based on the specific circumstances of the vehicle. Keep in mind that labor rates and diagnostic fees can vary, so it's advisable to inquire about these costs upfront.

When is the Code Detected?

The Engine Control Module (ECM) has detected a fault in the cruise control circuit

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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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