LEMON Manuals
: Even more car manuals for everyone: 1960-2025
Home
>>
Jeep
>>
2009
>>
Commander Overland, RWD
>>
Repair and Diagnosis (Single Page)
>>
Accessories & Equipment
>>
Memory Modules
>>
Front Control Module (FCM) - Electrical Diagnostics
>>
DTC Troubleshooting
>>
B2112-5 Volt Supply Circuit Low
>>
Possible Causes
April 5, 2026:
LEMON Manuals is launched!
Read the announcement.
Possible Causes
Possible Causes
(F891) 5 VOLT SUPPLY CIRCUIT SHORTED TO GROUND
(F891) 5 VOLT SUPPLY CIRCUIT SHORTED TO THE (C918) FCM SENSOR RETURN CIRCUIT
A/C PRESSURE TRANSDUCER
FRONT CONTROL MODULE (FCM)