SRS Airbag Control Module Internal Fault
2007-2012 Nissan Altima 2.5L I4
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
- B0007Rear Left Side Airbag Deployment Circuit
- B0008Rear Right Side Airbag Deployment Circuit
- B0010Driver Side Airbag Deployment
- B0011Driver Side Airbag Deployment Circuit Open
B0085 on Other Vehicles
Nissan 200SX
1995-1998 1.6L I4 GA16DE
Nissan 200SX SE-R
1995-1998 2.0L I4 SR20DE
Nissan 240SX
1995-1998 2.4L I4 KA24DE
Nissan 300ZX
1990-1996 3.0L V6 VG30DE
Nissan 300ZX Twin Turbo
1990-1996 3.0L Twin-Turbo V6 VG30DETT
Nissan 350Z
2003-2006 3.5L V6 VQ35DE
Nissan 350Z
2007-2009 3.5L V6 VQ35HR
Nissan 370Z
2009-2020 3.7L V6 VQ37VHR
Common Questions
What does code B0085 mean on a 2007-2012 Nissan Altima?
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 Nissan Altima?
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 2007-2012 Nissan Altima?
Common causes of B0085 include: ACM internal circuit failure, ACM software corruption, Power supply issue to ACM, Previous crash event stored in module.