Lippert · Ground Control 3.0 LCD leveling systems
External SensorRear sensor connection fault
The controller detected a bad connection or wiring problem to the rear level sensor.
What it means
Plain-English answer
The system cannot reliably use the remote rear sensor. Lippert's repair path involves inspecting and repairing the sensor connection or harness.
Owner-safe checks
What to check first
- 01
Stop automatic leveling and keep people clear of the RV.
- 02
Record the message and whether it appeared after recent service.
- 03
Inspect only accessible harness areas for obvious external damage.
Safety boundary
Stop and call a technician when
- Do not cut the underbelly or probe wiring without the required support and training.
- Arrange qualified leveling-system service.
Primary reference
Check the exact manual
Applicability: Ground Control 3.0 LCD leveling systems. The data plate and specification letter determine which procedure is correct.
Open Lippert Ground Control 3.0 troubleshooting manual ↗Source reviewed August 2026