U11E4
CAN Communication Message Missing
U11E4 is an OBD-II diagnostic trouble code meaning: CAN Communication Message Missing. Common causes: broken or damaged can bus wiring, poor contact in can network connectors. Estimated repair cost: $6–111.
Symptoms
- Check Engine light comes on
- Unstable engine operation
- Disabling some vehicle systems
- Gear shifting problems
- Dashboard malfunctions
Causes
- Broken or damaged CAN bus wiring
- Poor contact in CAN network connectors
- Malfunction of one of the modules connected to the CAN bus
- Problems with power supply to CAN network modules
- Software failures in the ECU
How to Fix
- Check the integrity of the CAN bus wiring
- Inspect and clean the contacts in the CAN network connectors
- Check the power supply of all CAN network modules
- Scan all modules for errors
- If necessary, replace the faulty module
Related codes
FAQ
What does the U11E4 code mean?
U11E4 is an OBD-II diagnostic trouble code that indicates: CAN Communication Message Missing
What causes a U11E4 error code?
The most common causes of U11E4 include: Broken or damaged CAN bus wiring; Poor contact in CAN network connectors; Malfunction of one of the modules connected to the CAN bus; Problems with power supply to CAN network modules.
How do I fix a U11E4 diagnostic trouble code?
To fix U11E4: Check the integrity of the CAN bus wiring. Inspect and clean the contacts in the CAN network connectors. Check the power supply of all CAN network modules. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U11E4?
Yes, but get it checked soon
How much does it cost to fix U11E4?
The estimated repair cost for U11E4 is $6–111. Actual cost depends on your vehicle, location, and labor rates.
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