I have a 2006 LR3 that displays a Transmission Fault message every now and then. It does not affect the drivability of the car as far as I can tell. I pulled the following codes. Are these all related? Maybe a brake switch issue?

U0155-87 Loss of comm with instrument control module (Permanent)
U0102-87 Loss of comm with transfer case module (Intermittent)
U0132-87 Loss of comm with ride level control module (Intermittent)
U0127-87 Loss of comm with tire pressure monitor module (Intermittent)

 

Sounds like a weak battery, poor wire connection at BCM module (or similar), or
possible water intrusion issue at the passenger side cowl above the cabin air filter.