B0089high severityBody
SRS Control Module Voltage High
on 1999 BMW 528iT E39 2.8L I6 M52 Touring · RWD
What this code means
The SRS control module is receiving higher than specified operating voltage.
Symptoms
- Airbag warning light on
- SRS codes set
- Electronic component stress
Common causes
- Overcharging alternator
- Faulty voltage regulator
- Poor ground causing voltage offset
- Jump start damage
Diagnostic steps
- Check charging system voltage
- Test alternator output regulation
- Inspect ground connections
- Measure voltage at ACM
Repair notes
Repair charging system. Replace alternator or voltage regulator if overcharging.
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
B0010
Driver Side Airbag Deployment
B0011
Driver Side Airbag Deployment Circuit Open
B0012
Driver Side Airbag Deployment Circuit Short to Ground
B0013
Driver Side Airbag Deployment Circuit Short to Battery