B1005low severityBody
TPMS Sensor Signal Intermittent - Left Front
on 2021 Mazda MX-5 Miata 2.0L I4 · RWD
What this code means
The left front TPMS sensor signal is intermittent, causing sporadic pressure readings.
Symptoms
- TPMS light comes on and off
- Pressure reading intermittent
- Occasional TPMS fault flash
Common causes
- Weak sensor battery
- RF interference
- Sensor antenna issue
- Receiver sensitivity low
- Metal valve stem corroding sensor antenna
Diagnostic steps
- Monitor sensor signal strength
- Check for RF interference sources
- Inspect sensor and valve stem
- Test with TPMS trigger tool
- Check receiver antenna
Repair notes
Replace sensor if battery is weak. Check for interference from aftermarket electronics.
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