B0084
Passenger Seat Lumbar Motor Circuit
2008-2008 Cadillac STS 3.6L V6
Low SeverityBodyGeneric (SAE)
The 2008 Cadillac STS is equipped with a 3.6L V6 engine. Below you'll find detailed b0084 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
Malfunction in the passenger seat lumbar support motor circuit.
Symptoms
- Passenger lumbar not adjusting
- No response from switch
- Motor running but no movement
Common Causes
- Faulty motor
- Switch failure
- Wiring issue
- Mechanical linkage broken
Diagnostic Steps
- Test switch
- Direct-power motor
- Inspect wiring
- Check mechanical linkage
Repair Notes
Replace lumbar motor, switch, or repair linkage.
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
- B0007Rear Left Side Airbag Deployment Circuit
- B0008Rear Right Side Airbag Deployment Circuit
- B0010Driver Side Airbag Deployment
- B0011Driver Side Airbag Deployment Circuit Open
B0084 on Other Vehicles
Common Questions
What does code B0084 mean on a 2008-2008 Cadillac STS?
B0084 stands for "Passenger Seat Lumbar Motor Circuit". Malfunction in the passenger seat lumbar support motor circuit.
What are the symptoms of B0084 on a Cadillac STS?
Common symptoms of B0084 include: Passenger lumbar not adjusting, No response from switch, Motor running but no movement.
What causes B0084 on a 2008-2008 Cadillac STS?
Common causes of B0084 include: Faulty motor, Switch failure, Wiring issue, Mechanical linkage broken.
Last updated: March 2026