U0026
Low Speed CAN Communication Bus (-) High
U0026 is an OBD-II diagnostic trouble code meaning: Low Speed CAN Communication Bus (-) High. Common causes: short circuit in can circuit to power, broken or damaged can bus wires. Estimated repair cost: $6–56.
Symptoms
- Check Engine Light Is On
- Systems connected to the low-speed CAN bus do not work or do not work correctly
- Errors in other vehicle systems
- Problems with diagnostics via OBD-II connector
Causes
- Short circuit in CAN circuit to power
- Broken or damaged CAN bus wires
- Fault in one of the modules connected to the bus
- Problems with contacts in connectors
- Corroded or oxidized wiring
How to Fix
- Check the integrity of the CAN bus wires
- Check the resistance and voltage in the CAN circuit
- Inspect connectors and contacts for damage
- Disable the modules one by one to find the faulty one.
- Repair or replace damaged wiring
Related codes
Error U0026 by Vehicle Brand
FAQ
What does the U0026 code mean?
U0026 is an OBD-II diagnostic trouble code that indicates: Low Speed CAN Communication Bus (-) High
What causes a U0026 error code?
The most common causes of U0026 include: Short circuit in CAN circuit to power; Broken or damaged CAN bus wires; Fault in one of the modules connected to the bus; Problems with contacts in connectors.
How do I fix a U0026 diagnostic trouble code?
To fix U0026: Check the integrity of the CAN bus wires. Check the resistance and voltage in the CAN circuit. Inspect connectors and contacts for damage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0026?
Yes, but get it checked soon
How much does it cost to fix U0026?
The estimated repair cost for U0026 is $6–56. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat