Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSJEEP2008LIBERTY SPORT, 4WD, PART TIME, AUTOMATICREPAIR AND DIAGNOSISQUICK LOOKUPSDTC INDEXIGNITION CONTROL DTCS
2008 Jeep Liberty Sport, 4WD, Part Time, Automatic
Ignition Control DTCS
2008 Jeep Liberty Sport, 4WD, Part Time, AutomaticSECTION Ignition Control DTCS
IGNITION CONTROL DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| B2101 | IGNITION RUN/START INPUT CIRCUIT LOW |
| B2102 | IGNITION RUN/START INPUT CIRCUIT HIGH |
| B210D | BATTERY VOLTAGE LOW |
| 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 |
RENDER: 1.0x
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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.