B0085critical severityBody
SRS Airbag Control Module Internal Fault
on 2022 Mazda MX-5 Miata 2.0L I4 · RWD
What this code means
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.
Other Body codes on this vehicle
B0001
Driver Frontal Stage 1 Deployment Control
B0002
Driver Frontal Stage 2 Deployment Control
B0003
Passenger Frontal Stage 1 Deployment Control
B0004
Passenger Frontal Stage 2 Deployment Control
B0005
Driver Knee Airbag Deployment Circuit
B0006
Passenger Knee Airbag Deployment Circuit
B0007
Rear Left Side Airbag Deployment Circuit
B0008
Rear Right Side Airbag Deployment Circuit
B0009
Rear Center Airbag Deployment Circuit
B0010
Driver Side Airbag Deployment