U0013
Medium Speed CAN Communication Bus (-) Low
The CAN-Low signal of the medium-speed bus is shorted to ground. Comfort and body modules can no longer exchange messages and trigger several user-visible faults at once (windows, locking, lighting).
The CAN-Low signal of the medium-speed bus is shorted to ground. Comfort and body modules can no longer exchange messages and trigger several user-visible faults at once (windows, locking, lighting).
Common causes
- high
CAN-Low shorted to ground
One of the most commonly reported causes for this code — check this first.
Typical part cost: $70-660
- medium
Water ingress in door connector
A plausible cause — test and verify before replacing parts.
Typical part cost: $70-660
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does U0013 mean?
U0013 means "Medium Speed CAN Communication Bus (-) Low". It is a generic OBD-II code that points to a fault in the network / communication.
What are the most common causes of U0013?
can-low shorted to ground; water ingress in door connector; gateway module routing can messages incorrectly — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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