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Home >> Jeep >> 2017 >> Wrangler Sahara, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 81 ((Instrument Cluster - Electrical Diagnostics)) >> DTC Troubleshooting >> U121F-00-Lost Communication With SEATBELT Reminder Module >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2017 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
LIN BUS DTCS PRESENT
FUSED IGNITION RUN CONTROL OUTPUT CIRCUIT OPEN OR HIGH RESISTANCE
GROUND CIRCUIT OPEN OR HIGH RESISTANCE
SEAT BELT REMINDER INDICATOR