LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Jeep >> 2010 >> Commander Sport, 5.7 T, 4WD >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Front Control Module (FCM) - Electrical Diagnostics >> DTC Troubleshooting >> U0025-Can B Bus (-) Circuit Low >> Possible Causes
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Possible Causes

Possible Causes 
(D54) CAN B BUS (-) CIRCUIT SHORTED TO GROUND OR TO (D55) CAN B BUS (+) CIRCUIT
ANY CAN B BUS MODULE
FRONT CONTROL MODULE (FCM)