LEMON Manuals
: Even more car manuals for everyone: 1960-2025
Home
>>
Land Rover
>>
2013
>>
Range Rover Sport HSE
>>
Repair and Diagnosis
>>
Quick Lookups
>>
DTC Index
>>
Diagnostic Trouble Code Index DTC: Automatic Temperature Control Module (ATC) -- Range Rover Sport/L320
>>
Diagnostic Trouble Code Index DTC: Automatic Temperature Control Module (ATC)
>>
Description And Operation
>>
DTC U0256-87 Lost Communication With Front Controls Interface Module "A" - Missing message
>>
Possible Causes
April 5, 2026:
LEMON Manuals is launched!
Read the announcement.
Possible Causes
Lost communication with the integrated control panel
CAN circuit short to ground, short to power, open circuit
Integrated control panel failure
Central junction box failure
Automatic temperature control module failure