2007 Jeep Wrangler X, AutomaticFACTORY OEM SERVICE PROCEDURE

Diagnostic Code Index

DIAGNOSTIC CODE INDEX

DTC Description
B2101  IGNITION RUN/START INPUT CIRCUIT LOW
B2102  IGNITION RUN/START INPUT CIRCUIT HIGH
B210E  BATTERY VOLTAGE HIGH
B2142  IGNITION OFF DRAW (IOD) FUSE NOT PRESENT
B219A  IGNITION UNLOCK RUN/START CONTROL CIRCUIT OVERCURRENT
B219F  IGNITION OFF DRAW (IOD) FUSE BLOWN
B2206  CURRENT VIN MISSING/MISMATCH
B222C  VEHICLE CONFIGURATION NOT PROGRAMMED
U0100  LOST COMMUNICATION WITH ECM/PCM
U0101  LOST COMMUNICATION WITH TCM
U0114  LOST COMMUNICATION WITH FINAL DRIVE CONTROL MODULE
U0121  LOST COMMUNICATION WITH ANTI-LOCK BRAKE MODULE
U0151  LOST COMMUNICATION WITH OCCUPANT RESTRAINT CONTROLLER
U0154  LOST COMMUNICATION WITH OCCUPANT CLASSIFICATION MODULE
U0155  LOST COMMUNICATION WITH CLUSTER/CCN
U0164  LOST COMMUNICATION WITH HVAC CONTROL MODULE
U0168  LOST COMMUNICATION WITH VEHICLE SECURITY CONTROL MODULE (SKREEM/WCM)
U0184  LOST COMMUNICATION WITH RADIO
U0186  LOST COMMUNICATION WITH AUDIO AMPLIFIER
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.