U0104moderate severityNetwork
Lost Communication with Cruise Control Module
on 2001 Mazda MX-5 Miata 1.8L I4 · RWD
What this code means
Cannot communicate with the cruise control module.
Symptoms
- Cruise control inoperative
- Cruise light not illuminating
- Adaptive cruise not available
- Speed not maintained
Common causes
- Cruise control module failure
- CAN bus wiring issue
- Clockspring failure
- Fuse blown
- Steering wheel button failure
Diagnostic steps
- Check cruise control fuse
- Test module power and ground
- Check clockspring continuity
- Inspect steering wheel button connections
- Check CAN wiring to module
Repair notes
Check clockspring (common failure) and fuses. Test steering wheel controls.
Other Network codes on this vehicle
U0001
High Speed CAN Communication Bus
U0002
High Speed CAN Communication Bus Performance
U0003
High Speed CAN Communication Bus (+) Open
U0004
High Speed CAN Communication Bus (+) Low
U0005
High Speed CAN Communication Bus (+) High
U0006
High Speed CAN Communication Bus (-) Open
U0007
High Speed CAN Communication Bus (-) Low
U0008
High Speed CAN Communication Bus (-) High
U0009
High Speed CAN Communication Bus Shorted Together
U0010
Medium Speed CAN Communication Bus