U0011
Medium Speed CAN Communication Bus Performance
U0011 is an OBD-II diagnostic trouble code meaning: Medium Speed CAN Communication Bus Performance. Common causes: open or short circuit in the can bus wiring, corrosion or oxidation of contacts in connectors. Estimated repair cost: $6–56.
Symptoms
- Unstable operation of the vehicle's electronic systems
- The appearance of other errors related to the CAN bus
- Problems starting the engine
- Dashboard malfunctions
- Lost connection with some modules
Causes
- Open or short circuit in the CAN bus wiring
- Corrosion or oxidation of contacts in connectors
- Fault in one of the modules connected to the bus
- Interference in the electrical system
- Damage to CAN bus terminators
How to Fix
- Check the integrity of the CAN bus wiring
- Inspect and clean the contacts in the connectors
- Check voltage and resistance on the CAN bus
- Disable the modules one by one to identify the faulty one.
- Check the condition of the CAN bus terminators
Related codes
Error U0011 by Vehicle Brand
FAQ
What does the U0011 code mean?
U0011 is an OBD-II diagnostic trouble code that indicates: Medium Speed CAN Communication Bus Performance
What causes a U0011 error code?
The most common causes of U0011 include: Open or short circuit in the CAN bus wiring; Corrosion or oxidation of contacts in connectors; Fault in one of the modules connected to the bus; Interference in the electrical system.
How do I fix a U0011 diagnostic trouble code?
To fix U0011: Check the integrity of the CAN bus wiring. Inspect and clean the contacts in the connectors. Check voltage and resistance on the CAN bus. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0011?
Limited driving only, diagnose soon
How much does it cost to fix U0011?
The estimated repair cost for U0011 is $6–56. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat