U1039 Ford Code - Invalid Or Missing Data For Primary Id Vehicle Speed
Quick Answer
Network Diagnostic Trouble Code (DTC) occurs during module-to-module communication concerns. Common causes include Faulty Vehicle Speed Sensor, Vehicle speed sensor harness or connectors is open or shorted, Vehicle speed sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- U1039 Ford indicates Invalid Or Missing Data For Primary Id Vehicle Speed.
- Common causes
- Common causes include Faulty Vehicle Speed Sensor, Vehicle speed sensor harness or connectors is open or shorted, Vehicle speed sensor circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code U1039 Ford Description
What are the Possible Causes of the DTC U1039 Ford?
- Faulty Vehicle Speed Sensor
- Vehicle speed sensor harness or connectors is open or shorted
- Vehicle speed sensor circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC U1039 Ford?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
1998-2002 Ford Crown Victoria
1998-2002 Ford Mustang
1998-2002 Ford Taurus
1998-1999 F-250 LD
1998-2001 Ford Explorer
1998-2002 Ford E SERIES
1998-2002 Ford Expedition
1998-2002 Ford F-150
1998-2002 Ford Ranger
1998-2002 Ford Windstar
1999-2002 Ford Super Duty F Series
2000-2002 Ford Excursion
2000-2002 Ford Explorer Sport
2001-2002 Ford Explorer Sport Trac
Ford Factory Service Bulletin OBDII Code U1039
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the U1039 Ford code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the U1039 Ford code?
Need more information on how to fix the U1039 Ford code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the U1039 Ford code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about U1039 Ford Code
What does OBDII code U1039 mean for Ford vehicles?
U1039 indicates "Invalid Or Missing Data For Primary Id Vehicle Speed," meaning the vehicle's communication network is detecting incomplete or incorrect speed data from a module.
What are common symptoms of code U1039 in Ford vehicles?
Symptoms may include erratic speedometer readings, transmission shifting issues, reduced engine performance, or the activation of warning lights such as the check engine light.
What causes code U1039 to appear in Ford vehicles?
Possible causes include a faulty speed sensor, damaged wiring or connectors, issues with the vehicle's communication network, or a malfunctioning control module.
Can driving with U1039 cause further damage to my Ford?
While it may not directly damage the vehicle, driving with U1039 can lead to performance issues, unsafe driving conditions, or improper transmission operation.
How can I fix code U1039 on my Ford vehicle?
Start by inspecting the vehicle speed sensor and wiring for damage or loose connections. If these are fine, test the communication network and modules using diagnostic tools.
Do I need a professional to repair code U1039?
If you have access to diagnostic equipment and experience with vehicle wiring, you can attempt the repair. Otherwise, it's best to consult a certified technician.
Can a faulty speed sensor trigger code U1039 on a Ford vehicle?
Yes, a malfunctioning speed sensor can cause U1039 by sending invalid or missing speed data to the vehicle's network.
Does code U1039 affect the transmission on Ford vehicles?
Yes, invalid speed data can affect transmission operation, causing shifting problems or erratic performance.
Is replacing the speed sensor the only solution for code U1039?
No, while replacing the speed sensor may resolve the issue, you may also need to inspect and repair wiring, connectors, or communication network components.
How can I clear code U1039 after fixing the issue?
Once repaired, use an OBDII scanner to clear the code. If the problem is fully resolved, the code should not return.
Discuss the causes and fixes for U1039 Ford OBDII Code
Code U1039 Ford comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
