B0601low severityBody
Blower Motor Resistor Circuit
on 2002 Mazda MX-5 Miata 1.8L I4 · RWD
What this code means
Malfunction in the blower motor resistor or speed control module. The resistor controls blower speed at lower settings.
Symptoms
- Blower only works on highest speed
- No blower at low/medium settings
- Blower speed inconsistent
Common causes
- Faulty blower resistor
- Thermal fuse in resistor blown
- Corroded resistor connector
- Excessive current from failing blower motor
Diagnostic steps
- Test blower resistor resistance at each tap
- Check thermal fuse continuity
- Inspect resistor connector
- Measure blower motor current draw
Repair notes
Replace blower motor resistor. If resistor keeps failing, check blower motor current draw as a failing motor can burn resistors.
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B0001
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B0002
Driver Frontal Stage 2 Deployment Control
B0003
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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