U0019
Low Speed CAN Communication Bus
U0019 is an OBD-II diagnostic trouble code meaning: Low Speed CAN Communication Bus. Common causes: broken or damaged can bus wires, corrosion of contacts in connectors. Estimated repair cost: $6–56.
Symptoms
- Unstable operation of the vehicle's electronic systems
- The Check Engine light comes on
- Problems starting the engine
- Failure of some functions (for example, climate control)
- Errors in other vehicle systems
Causes
- Broken or damaged CAN bus wires
- Corrosion of contacts in connectors
- Fault in one of the modules connected to the bus
- Problems with module power supply
- Interference in the electrical system
How to Fix
- Check the integrity of the CAN bus wiring
- Inspect and clean the contacts in the connectors
- Check the power supply of the modules connected to the bus
- Carry out diagnostics of all modules on the CAN bus
- Replace damaged wires or faulty modules
Related codes
Error U0019 by Vehicle Brand
FAQ
What does the U0019 code mean?
U0019 is an OBD-II diagnostic trouble code that indicates: Low Speed CAN Communication Bus
What causes a U0019 error code?
The most common causes of U0019 include: Broken or damaged CAN bus wires; Corrosion of contacts in connectors; Fault in one of the modules connected to the bus; Problems with module power supply.
How do I fix a U0019 diagnostic trouble code?
To fix U0019: Check the integrity of the CAN bus wiring. Inspect and clean the contacts in the connectors. Check the power supply of the modules connected to the bus. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0019?
Limited driving only, diagnose soon
How much does it cost to fix U0019?
The estimated repair cost for U0019 is $6–56. Actual cost depends on your vehicle, location, and labor rates.
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