B0086high severityBody
SRS Warning Lamp Circuit Malfunction
on 2021 Mazda MX-5 Miata 2.0L I4 · RWD
What this code means
The SRS airbag warning lamp circuit is malfunctioning. The lamp may be always on, always off, or not performing the bulb check properly.
Symptoms
- Airbag warning light stuck on
- Airbag light not illuminating during bulb check
- SRS fault stored
- Cannot determine if SRS system has other faults
Common causes
- Burnt out airbag warning lamp bulb
- Wiring issue to instrument cluster
- Instrument cluster fault
- ACM lamp driver failure
Diagnostic steps
- Check airbag warning lamp bulb
- Test lamp circuit voltage from ACM
- Inspect wiring to cluster
- Test cluster lamp driver
- Scan for additional SRS codes
Repair notes
Replace warning lamp bulb or repair wiring. If ACM lamp driver is faulty, replace ACM.
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