Trunk/Liftgate Lock Circuit
2002-2002 Dodge Ram 2500 5.9L I6 Cummins Diesel
The 2002 Dodge Ram 2500 is equipped with a 5.9L inline-6 diesel engine. Below you'll find detailed b0099 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
Malfunction in the trunk or liftgate lock/latch actuator circuit.
Symptoms
- Trunk will not lock or unlock
- Liftgate latch not releasing
- Remote trunk release not working
- Trunk ajar warning stays on
Common Causes
- Faulty trunk latch actuator
- Wiring damage in trunk lid
- Trunk release switch failure
- Latch mechanism jammed
- BCM output issue
Diagnostic Steps
- Test trunk release switch
- Apply direct power to latch actuator
- Inspect wiring in trunk lid hinge area
- Check for mechanical latch jam
- Test BCM trunk output
Repair Notes
Replace trunk latch actuator or repair wiring. Check hinge area wiring for fatigue damage.
Related Codes
Other Body Codes
- B0001Driver Frontal Stage 1 Deployment Control
- B0002Driver Frontal Stage 2 Deployment Control
- B0003Passenger Frontal Stage 1 Deployment Control
- B0004Passenger Frontal Stage 2 Deployment Control
- B0005Driver Knee Airbag Deployment Circuit
- B0006Passenger Knee Airbag Deployment Circuit
- B0010Driver Side Airbag Deployment
- B0011Driver Side Airbag Deployment Circuit Open
- B0012Driver Side Airbag Deployment Circuit Short to Ground
- B0013Driver Side Airbag Deployment Circuit Short to Battery
B0099 on Other Vehicles
Common Questions
What does code B0099 mean on a 2002-2002 Dodge Ram 2500?
B0099 stands for "Trunk/Liftgate Lock Circuit". Malfunction in the trunk or liftgate lock/latch actuator circuit.
What are the symptoms of B0099 on a Dodge Ram 2500?
Common symptoms of B0099 include: Trunk will not lock or unlock, Liftgate latch not releasing, Remote trunk release not working, Trunk ajar warning stays on.
What causes B0099 on a 2002-2002 Dodge Ram 2500?
Common causes of B0099 include: Faulty trunk latch actuator, Wiring damage in trunk lid, Trunk release switch failure, Latch mechanism jammed, BCM output issue.
Last updated: March 2026