Lost Communication with Wiper 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 u0202 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
Cannot communicate with the windshield wiper control module.
Symptoms
- Wipers not working
- Wiper speed not changing
- Intermittent wiper mode not working
- Rear wiper inoperative
Common Causes
- Wiper module failure
- CAN bus wiring
- Module power loss
- Fuse blown
- Wiper motor failure
Diagnostic Steps
- Check wiper module fuse
- Test power and ground
- Check CAN wiring
- Test wiper motor directly
- Inspect wiper switch
Repair Notes
Check fuses and wiper motor. Module may be integrated into wiper motor assembly.
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
U0202 on Other Vehicles
Common Questions
What does code U0202 mean on a 2003-2003 Mazda B2300?
U0202 stands for "Lost Communication with Wiper Control Module". Cannot communicate with the windshield wiper control module.
What are the symptoms of U0202 on a Mazda B2300?
Common symptoms of U0202 include: Wipers not working, Wiper speed not changing, Intermittent wiper mode not working, Rear wiper inoperative.
What causes U0202 on a 2003-2003 Mazda B2300?
Common causes of U0202 include: Wiper module failure, CAN bus wiring, Module power loss, Fuse blown, Wiper motor failure.
Last updated: March 2026