LEMON Manuals
: Even more car manuals for everyone: 1960-2025
Home
>>
Land Rover
>>
2014
>>
LR4 Base, AWD
>>
Repair and Diagnosis
>>
Transmission
>>
Transmission Control Systems
>>
Diagnostic Trouble Code Index DTC: Transmission Control Module (TCM) -- LR4/L319
>>
Diagnostic Trouble Code Index DTC: Transmission Control Module (TCM)
>>
Description And Operation
>>
DTC P279D-64: Four Wheel Drive (4WD) Range Signal Circuit - Signal plausibility failure
>>
Possible Causes
April 5, 2026:
LEMON Manuals is launched!
Read the announcement.
Possible Causes
Transfer case control module power or ground circuit open circuit, high resistance
High speed CAN bus circuit short circuit to ground, short circuit to power, open circuit, high resistance
Transfer case system fault