U0162
Lost Communication with Convertible Roof Module
2016-2021 Mazda CX-3 2.0L I4 🇨🇦
Moderate SeverityNetwork
Description
Cannot communicate with the convertible top or retractable hardtop control module.
Symptoms
- Convertible top not operating
- Top stuck partially open
- Top warning light on
- Top controls unresponsive
Common Causes
- Top module failure
- CAN bus wiring
- Module power loss
- Fuse blown
- Hydraulic pump failure
- Trunk latch sensor issue
Diagnostic Steps
- Check top module fuse
- Test power and ground
- Check CAN wiring
- Test top hydraulic system
- Check trunk and boot sensors
Repair Notes
Check fuses and trunk latch sensors. Top operation requires all latches and sensors to confirm position.
Related Codes
Other Network Codes
- U0001High Speed CAN Communication Bus
- U0001High Speed CAN Communication Bus
- U0002High Speed CAN Communication Bus Performance
- U0002High Speed CAN Communication Bus Performance
- U0003High Speed CAN Communication Bus (+) Open
- U0003High Speed CAN Communication Bus (+) Open
- U0004High Speed CAN Communication Bus (+) Low
- U0004High Speed CAN Communication Bus (+) Low
- U0005High Speed CAN Communication Bus (+) High
- U0005High Speed CAN Communication Bus (+) High
U0162 on Other Vehicles
Common Questions
What does code U0162 mean on a 2016-2021 Mazda CX-3?
U0162 stands for "Lost Communication with Convertible Roof Module". Cannot communicate with the convertible top or retractable hardtop control module.
What are the symptoms of U0162 on a Mazda CX-3?
Common symptoms of U0162 include: Convertible top not operating, Top stuck partially open, Top warning light on, Top controls unresponsive.
What causes U0162 on a 2016-2021 Mazda CX-3?
Common causes of U0162 include: Top module failure, CAN bus wiring, Module power loss, Fuse blown, Hydraulic pump failure, Trunk latch sensor issue.