Lost Communication with Cruise Control Module
2003-2003 Mazda B2300 2.3L I4
The 2003 Mazda B2300 is equipped with a 2.3L inline-4 engine. Below you'll find detailed u0104 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
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.
Related Codes
Other Network Codes
- U0001High Speed CAN Communication Bus
- U0002High Speed CAN Communication Bus Performance
- U0003High Speed CAN Communication Bus (+) Open
- U0004High Speed CAN Communication Bus (+) Low
- U0005High Speed CAN Communication Bus (+) High
- U0006High Speed CAN Communication Bus (-) Open
- U0007High Speed CAN Communication Bus (-) Low
- U0008High Speed CAN Communication Bus (-) High
- U0009High Speed CAN Communication Bus Shorted Together
- U0010Medium Speed CAN Communication Bus
U0104 on Other Vehicles
Common Questions
What does code U0104 mean on a 2003-2003 Mazda B2300?
U0104 stands for "Lost Communication with Cruise Control Module". Cannot communicate with the cruise control module.
What are the symptoms of U0104 on a Mazda B2300?
Common symptoms of U0104 include: Cruise control inoperative, Cruise light not illuminating, Adaptive cruise not available, Speed not maintained.
What causes U0104 on a 2003-2003 Mazda B2300?
Common causes of U0104 include: Cruise control module failure, CAN bus wiring issue, Clockspring failure, Fuse blown, Steering wheel button failure.
Last updated: March 2026