B0120low severityBody
Theft Deterrent System Malfunction
on 2014 Jeep Cherokee 2.4L I4 · 4WD
What this code means
A general fault in the vehicle theft deterrent (anti-theft) system. The system may trigger false alarms or not arm properly.
Symptoms
- Security light flashing rapidly
- False alarm activation
- System will not arm
- Horn chirp confirmation missing when locking
Common causes
- Faulty hood/door/trunk switch
- BCM anti-theft module failure
- Wiring issue
- Aftermarket alarm interfering
- Battery was disconnected
Diagnostic steps
- Scan BCM for theft deterrent codes
- Check all door, hood, and trunk switches
- Inspect for aftermarket alarm system
- Verify BCM programming
- Test alarm arm/disarm cycle
Repair notes
Repair faulty switches or wiring. Remove conflicting aftermarket alarm if present.
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Other Body codes on this vehicle
B0001
Driver Frontal Stage 1 Deployment Control
B0001
Driver Frontal Stage 1 Deployment Control
B0002
Driver Frontal Stage 2 Deployment Control
B0002
Driver Frontal Stage 2 Deployment Control
B0003
Passenger Frontal Stage 1 Deployment Control
B0003
Passenger Frontal Stage 1 Deployment Control
B0004
Passenger Frontal Stage 2 Deployment Control
B0004
Passenger Frontal Stage 2 Deployment Control
B0005
Driver Knee Airbag Deployment Circuit
B0005
Driver Knee Airbag Deployment Circuit