Code result
U0024
Low Speed CAN Communication Bus Off
Moderate severity
What it means
The low-speed CAN controller has gone bus-off after repeated error frames. The fault-tolerant single-wire fallback is exhausted and the bus stops carrying traffic.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Wiring short keeps bus in bus-off
highOne of the most commonly reported causes for this code — check this first.
One failing node spamming errors
mediumA plausible cause — test and verify before replacing parts.
Gateway module routing CAN messages incorrectly
lowLess common, but worth ruling out after the more likely causes.
Related help
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