B0114moderate severityBody
Push Button Start System Circuit
on 2009 Mazda MX-5 Miata 2.0L I4 · RWD
What this code means
Malfunction in the push button start system. The vehicle may not recognize the key fob for engine starting.
Symptoms
- Push button start not responding
- Must hold fob against button to start
- Start button illumination off
- Intermittent no-start with fob in vehicle
Common causes
- Start button switch failure
- Ring antenna at start button faulty
- Key fob battery low
- BCM/smart key module fault
- Start button wiring issue
Diagnostic steps
- Check key fob battery
- Test start button switch
- Check ring antenna at button
- Scan smart key module codes
- Test backup start method
Repair notes
Replace start button assembly or ring antenna. Ensure key fob battery is fresh.
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
B0010
Driver Side Airbag Deployment
B0011
Driver Side Airbag Deployment Circuit Open