DTC Error Code P1039 FORD: Symptoms, Causes, and Solutions
1. Possible Symptoms
- Check engine light on (or service engine soon warning light)
2. Possible Causes
- Faulty vehicle speed sensor
- Vehicle speed sensor harness open or shorted
- Poor electrical connection in the vehicle speed sensor circuit
3. Meaning of Code P1039 FORD
The error code P1039 indicates a missing or incorrect vehicle speed signal. However, the exact description may vary depending on the Ford vehicle model and year.
4. Diagnostic and Repair Procedures
- Checking possible causes
- Visually inspect the wiring harness and associated connectors.
- Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
- Testing the vehicle speed sensor (VSS)
- Use a multimeter to check the sensor’s voltage and continuity.
- Compare the obtained values with the manufacturer’s specifications.
- Inspecting the wiring harness
- Look for any cuts, bare wires, or short circuits.
- Repair or replace the harness if necessary.
- Checking the electrical connection
- Ensure the connections to the speed sensor are secure and free from corrosion.
- Clean the connections and apply electrical lubricant if necessary.
- Replacing the vehicle speed sensor (if faulty)
- If the sensor is outside the manufacturer’s tolerances, replace it with a genuine Ford (OEM) sensor for better compatibility.
- Clearing the error code and road test
- After repair, clear the error code with an OBD-II scanner.
- Perform a road test to verify if the issue is resolved.
5. Note
If the problem persists after repairs, consult a professional or check the applicable technical service bulletins (TSB) for your Ford model for additional solutions.