U0162
Lost Communication with Convertible Roof Module
1999-2000 BMW 323i E46 2.5L I6
Moderate SeverityNetworkGeneric (SAE)
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
- 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
U0162 on Other Vehicles
Common Questions
What does code U0162 mean on a 1999-2000 BMW 323i E46?
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 BMW 323i E46?
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 1999-2000 BMW 323i E46?
Common causes of U0162 include: Top module failure, CAN bus wiring, Module power loss, Fuse blown, Hydraulic pump failure, Trunk latch sensor issue.