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P1039 – Ford DTC

Ford DTC P1039 – Vehicle Speed Signal Missing or Improper

DTC P1039 meaning on Ford

DTC P1039 on a Ford indicates a fault with the vehicle speed signal. This diagnostic trouble code is triggered when the vehicle’s computer detects that the signal related to the vehicle speed is missing or incorrect.

Ford DTC P1039 symptoms

Symptoms of DTC P1039 on a Ford may include:

  • Speedometer not working
  • ABS warning light illuminated
  • Transmission shifting issues

Ford DTC P1039 causes

Common causes of DTC P1039 on a Ford include:

  • Defective vehicle speed sensor
  • Wiring or connection issues related to the speed sensor
  • Faulty instrument cluster

Ford DTC P1039 seriousness

While DTC P1039 may not always result in immediate drivability issues, it is important to address this problem promptly. Ignoring this fault can lead to inaccurate speed readings and potential safety concerns.

How to diagnose DTC P1039 on Ford

To diagnose DTC P1039 on a Ford, you can:

  1. Use a diagnostic scanner to retrieve the trouble codes
  2. Inspect the vehicle speed sensor and its wiring for damage
  3. Check the instrument cluster for any visible issues

How to fix DTC P1039 on Ford

To fix DTC P1039 on a Ford, you may need to:

  1. Replace the faulty vehicle speed sensor
  2. Repair or replace any damaged wiring or connections
  3. If necessary, address any issues with the instrument cluster

How to erase DTC P1039 on Ford

To erase DTC P1039 on a Ford, you can:

  1. Use a diagnostic scanner to clear the trouble codes
  2. After making the necessary repairs, perform a test drive to ensure the issue is resolved

Recommended tools for Ford diagnostics

Explore our expert picks: The Best OBD2 Scanners for 2025

Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

← All Ford Diagnostic Trouble Codes

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