U0032high severityNetwork
Control Module Communication Bus C High
on 2021 BMW i3 Range Extender · RWD
What this code means
The C communication bus voltage is reading too high, disrupting normal data exchange. Modules on this bus may fail to communicate properly.
Symptoms
- Dashboard warning lights
- Module communication loss
- Intermittent faults
Common causes
- Bus C shorted to power/voltage
- Wiring insulation damage
- Failed control module
- Corroded connectors
Diagnostic steps
- Scan for stored network codes
- Inspect bus C wiring for shorts to power
- Measure bus C voltage with scope
- Isolate modules to find source
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Other Network codes on this vehicle
CC-ID-181
System Check Failed
CC-ID-207
Central Electronics Failure, Stop Vehicle
U0001
High Speed CAN Communication Bus
U0002
High Speed CAN Communication Bus Performance
U0003
High Speed CAN Communication Bus (+) Open
U0004
High Speed CAN Communication Bus (+) Low
U0005
High Speed CAN Communication Bus (+) High
U0006
High Speed CAN Communication Bus (-) Open
U0007
High Speed CAN Communication Bus (-) Low
U0008
High Speed CAN Communication Bus (-) High