U0024
Low Speed CAN Communication Bus Off
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.
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.
Common causes
- high
Wiring short keeps bus in bus-off
One of the most commonly reported causes for this code — check this first.
Typical part cost: $90-770
- medium
One failing node spamming errors
A plausible cause — test and verify before replacing parts.
Typical part cost: $90-770
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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 U0024 mean?
U0024 means "Low Speed CAN Communication Bus Off". It is a generic OBD-II code that points to a fault in the network / communication.
What are the most common causes of U0024?
wiring short keeps bus in bus-off; one failing node spamming errors; 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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