B0085
SRS Airbag Control Module Internal Fault
1999-2000 BMW 528iT E39 2.8L I6 🇨🇦
Critical SeverityBody
Description
The SRS airbag control module has detected an internal hardware or software fault.
Symptoms
- Airbag warning light on
- SRS system completely disabled
- All airbags inoperative
- Multiple SRS codes may be set
Common Causes
- ACM internal circuit failure
- ACM software corruption
- Power supply issue to ACM
- Previous crash event stored in module
Diagnostic Steps
- Check ACM power and ground circuits
- Read all stored SRS codes
- Check for crash event data
- Test ACM communication on diagnostic bus
- Inspect ACM connector
Repair Notes
Replace airbag control module. Module must be programmed to vehicle. Previous crash data means module must be replaced, not cleared.
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
B0085 on Other Vehicles
Common Questions
What does code B0085 mean on a 1999-2000 BMW 528iT E39?
B0085 stands for "SRS Airbag Control Module Internal Fault". The SRS airbag control module has detected an internal hardware or software fault.
What are the symptoms of B0085 on a BMW 528iT E39?
Common symptoms of B0085 include: Airbag warning light on, SRS system completely disabled, All airbags inoperative, Multiple SRS codes may be set.
What causes B0085 on a 1999-2000 BMW 528iT E39?
Common causes of B0085 include: ACM internal circuit failure, ACM software corruption, Power supply issue to ACM, Previous crash event stored in module.