Lost Communication with Adaptive Speed Control Module
2017-2020 Toyota 86 2.0L H4
Description
Cannot communicate with the adaptive cruise control or radar-based speed control module.
Symptoms
- Adaptive cruise control disabled
- Radar sensor warning
- ACC not available message
- Forward distance not displayed
Common Causes
- ACC module failure
- CAN bus wiring
- Module power loss
- Fuse blown
- Radar sensor blocked
- Front fascia damage near sensor
Diagnostic Steps
- Check ACC module fuse
- Test power and ground
- Check CAN wiring
- Clean radar sensor area
- Check for front bumper damage near sensor
- Inspect radar sensor alignment
Repair Notes
Check fuses. Radar sensor behind front grille can be blocked by ice, mud, or bumper damage.
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
U0230 on Other Vehicles
Toyota 4Runner
2003-2009 4.0L V6
Toyota 4Runner
2003-2009 4.7L V8
Toyota 4Runner
2010-2024 4.0L V6
Toyota Alphard
2023-2025 2.4L I4 Turbo T24A-FTS
Toyota Alphard
2023-2025 2.5L I4 Hybrid A25A-FXS
Toyota Aqua
2011-2021 1.5L I4 Hybrid 1NZ-FXE
Toyota Aqua
2021-2025 1.5L I3 Hybrid M15A-FXE
Toyota Avalon
2005-2012 3.5L V6
Common Questions
What does code U0230 mean on a 2017-2020 Toyota 86?
U0230 stands for "Lost Communication with Adaptive Speed Control Module". Cannot communicate with the adaptive cruise control or radar-based speed control module.
What are the symptoms of U0230 on a Toyota 86?
Common symptoms of U0230 include: Adaptive cruise control disabled, Radar sensor warning, ACC not available message, Forward distance not displayed.
What causes U0230 on a 2017-2020 Toyota 86?
Common causes of U0230 include: ACC module failure, CAN bus wiring, Module power loss, Fuse blown, Radar sensor blocked, Front fascia damage near sensor.