What are common causes for U0010?

MS-CAN line shorted to supply or ground (high) · One failing comfort module pulling the bus down (medium) · Gateway module routing CAN messages incorrectly (low)

What symptoms does U0010 show?

Multiple warning lights may illuminate · Affected modules may go into limp mode or shut down · Specific functions inoperative depending on module · Diagnostic tools may show communication faults

Network generic / SAE

U0010

Medium Speed CAN Communication Bus

A fault on the medium-speed CAN bus has been detected. This bus (typically 125 kbit/s) connects body and comfort modules — BCM, climate, doors, infotainment. A failure usually disables comfort functions but leaves the powertrain operational.

SystemNetwork

Typegeneric / SAE

GroupU0

Range / number– / 10

Possible causes

MS-CAN line shorted to supply or ground high
One failing comfort module pulling the bus down medium
Gateway module routing CAN messages incorrectly low

Symptoms

Multiple warning lights may illuminate
Affected modules may go into limp mode or shut down
Specific functions inoperative depending on module
Diagnostic tools may show communication faults

Inspection / repair

Difficulty: hard
DIY: shop recommended
Estimated cost: 80–1200 €
Estimated time: 1–6 h
Component: can bus wiring
Component: body control module

Sources

Wikipedia · CAN bus

References

sae:J2012 iso:11898