U1088low severityNetwork
Loss of Communication with Key Fob
on 2020 Ford Focus 2.0L I4 · FWD
What this code means
The vehicle cannot communicate with the key fob for keyless entry or push-button start.
Symptoms
- Keyless entry not working
- Push-button start not detecting key
- Key fob not recognized
- Place key in backup location message
Common causes
- Key fob battery dead
- Key fob internal failure
- Vehicle receiver failure
- Fuse blown
- Antenna module failure
- RF interference
Diagnostic steps
- Replace key fob battery
- Test with spare key fob
- Check keyless entry receiver fuse
- Test key fob signal with diagnostic tool
- Check for RF interference sources
Repair notes
Replace key fob battery first. Test with second key. If both keys fail, check vehicle receiver module.
Other Network codes on this vehicle
U0001
High Speed CAN Communication Bus
U0002
High Speed CAN Communication Bus Performance
U0003
High Speed CAN Communication Bus (+) Open
U0004
High Speed CAN Communication Bus (+) Low
U0005
High Speed CAN Communication Bus (+) High
U0006
High Speed CAN Communication Bus (-) Open
U0007
High Speed CAN Communication Bus (-) Low
U0008
High Speed CAN Communication Bus (-) High
U0009
High Speed CAN Communication Bus Shorted Together
U0010
Medium Speed CAN Communication Bus