Loss of GPS Signal
2002-2005 Ford Explorer 4.6L V8
Description
The navigation or telematics module has lost the GPS satellite signal for position data.
Symptoms
- Navigation position lost
- GPS coordinates unavailable
- Map position incorrect or not updating
- Telematics location unknown
Common Causes
- GPS antenna failure
- GPS antenna cable damaged
- Antenna connector loose
- Windshield metallic coating blocking signal
- Module GPS receiver failure
Diagnostic Steps
- Check GPS antenna connection
- Test GPS antenna signal with known good antenna
- Inspect antenna cable routing
- Check for aftermarket window tint blocking GPS
- Test module GPS receiver
Repair Notes
Check GPS antenna and cable connection. Metallic window tint can block GPS signal.
Related Codes
Other Network Codes
- U0001High Speed CAN Communication Bus
- U0001High Speed CAN Communication Bus
- U0001High Speed CAN Communication Bus
- U0002High Speed CAN Communication Bus Performance
- U0002High Speed CAN Communication Bus Performance
- U0002High Speed CAN Communication Bus Performance
- U0003High Speed CAN Communication Bus (+) Open
- U0003High Speed CAN Communication Bus (+) Open
- U0003High Speed CAN Communication Bus (+) Open
- U0004High Speed CAN Communication Bus (+) Low
U1056 on Other Vehicles
Ford Bronco
2021-2024 2.3L I4 EcoBoost
Ford Bronco
2021-2024 2.7L V6 EcoBoost
Ford Bronco Raptor
2022-2024 3.0L V6 EcoBoost
Ford Bronco Sport
2021-2024 1.5L I3 EcoBoost
Ford Bronco Sport
2021-2024 2.0L I4 EcoBoost
Ford Crown Victoria
1998-2011 4.6L V8 Modular 2V
Ford E-150
1997-2014 4.6L V8 Triton
Ford E-150
1997-2014 5.4L V8 Triton
Common Questions
What does code U1056 mean on a 2002-2005 Ford Explorer?
U1056 stands for "Loss of GPS Signal". The navigation or telematics module has lost the GPS satellite signal for position data.
What are the symptoms of U1056 on a Ford Explorer?
Common symptoms of U1056 include: Navigation position lost, GPS coordinates unavailable, Map position incorrect or not updating, Telematics location unknown.
What causes U1056 on a 2002-2005 Ford Explorer?
Common causes of U1056 include: GPS antenna failure, GPS antenna cable damaged, Antenna connector loose, Windshield metallic coating blocking signal, Module GPS receiver failure.