2020 Ford F-250 Super Duty Speedometer Isn't Working

Common Causes of Speedometer Malfunctions in Your 2020 Ford F-250 Super Duty and How to Fix Them

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Reviewed by
Andrew Hajjar
Written by RepairPal Car Genius
Updated January 14, 2025
0%
35% chance it's the
Vehicle Speed Sensor (VSS)
0%
28% chance it's the
Speedometer
0%
23% chance it's the
Electrical Issue
0%
14% chance it's
Something else
The most common reasons a 2020 Ford F-250 Super Duty speedometer isn't working are the vehicle speed sensor (VSS), a faulty speedometer, or an electrical issue.
  • Vehicle Speed Sensor (VSS): A faulty vehicle speed sensor can result in inaccurate speed readings and erratic transmission shifting.
  • Speedometer: A faulty speed sensor or a broken connection in the speedometer circuit can result in inaccurate speed readings.
  • Electrical Issue: A blown fuse or a short circuit in the wiring can cause various electrical issues in the vehicle's systems.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

What are the initial diagnostic steps to take when the speedometer isn't working on a 2020 Ford F-250 Super Duty?

When faced with a malfunctioning speedometer on your 2020 Ford F-250 Super Duty, it's essential to adopt a systematic diagnostic approach. Start by examining the speed sensor, as it plays a crucial role in relaying speed data to the speedometer. Look for any visible damage or loose connections that could disrupt its function. Next, inspect the wiring linked to the speed sensor; damaged or corroded wires can lead to inaccurate readings. Utilizing a diagnostic scanner to check for error codes can provide valuable insights into any underlying issues related to the speedometer or sensor. If these initial checks do not reveal the problem, turn your attention to the instrument cluster itself, as malfunctions here can also affect speedometer performance. Finally, conduct a practical test by comparing the speedometer's reading with your actual speed while driving. This hands-on approach will help you identify whether the issue lies within the speedometer mechanism itself. By following these steps, you can effectively troubleshoot and potentially resolve the speedometer issue on your Ford F-250.

What are the common problems that could cause the speedometer to stop working in a 2020 Ford F-250 Super Duty?

When the speedometer in a 2020 Ford F-250 Super Duty ceases to function, it can be frustrating, but understanding the common problems can help you troubleshoot effectively. One of the primary culprits is a faulty vehicle speed sensor, which is responsible for relaying speed information to the speedometer; if it malfunctions, you may experience erratic readings or a complete failure. Another potential issue lies within the instrument cluster itself, where the speedometer is housed; problems here can disrupt its operation. Additionally, a broken speedometer cable can prevent accurate speed display, while a blown fuse in the vehicle's electrical system may also lead to a non-functioning speedometer. Lastly, faulty wiring connected to the speedometer can interrupt the signal, causing it to stop working. By identifying these common issues, you can take the necessary steps to diagnose and repair the speedometer, restoring its functionality and ensuring a safer driving experience.

How urgent is it to address the non-functioning speedometer in a 2020 Ford F-250 Super Duty?

Addressing a non-functioning speedometer in a 2020 Ford F-250 Super Duty is of utmost urgency due to the potential legal and safety ramifications. A malfunctioning speedometer can lead to unintentional speeding, which not only risks fines and penalties but can also jeopardize your driving privileges. Moreover, the inability to accurately monitor your speed significantly increases the likelihood of accidents, as it disrupts your ability to make informed driving decisions. Beyond safety and legal concerns, neglecting this issue can adversely affect the vehicle's overall performance, as the speedometer is linked to various systems that rely on accurate speed readings for optimal functionality. Additionally, for those considering resale, a non-functioning speedometer can diminish the vehicle's value and deter potential buyers. Therefore, it is crucial to address this issue promptly to ensure compliance with traffic laws, maintain safety on the road, and preserve the vehicle's performance and resale value.

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