U18CB
Lost Communication With Active Safety Control Module 2 On Flexray Bus
U18CB is an OBD-II diagnostic trouble code meaning: Lost Communication With Active Safety Control Module 2 On Flexray Bus. Common causes: active safety control module 2 malfunction, open or short circuit in flexray bus wiring. Estimated repair cost: $56–556.
Symptoms
- Malfunction indicator light (MIL) is on
- Error message on the dashboard
- Active safety systems do not work (ABS, ESP, etc.)
- Possible problems with driving
- Other Flexray bus related fault codes
Causes
- Active safety control module 2 malfunction
- Open or short circuit in Flexray bus wiring
- Problems with Flexray bus connectors
- ECU malfunction
- Flexray bus problems
How to Fix
- Check Flexray bus wiring and connectors for damage
- Check power supply and grounding of active safety control module 2
- Check active safety control module 2 using diagnostic equipment
- Check ECU for errors and update software
- Replace faulty components
Related codes
FAQ
What does the U18CB code mean?
U18CB is an OBD-II diagnostic trouble code that indicates: Lost Communication With Active Safety Control Module 2 On Flexray Bus
What causes a U18CB error code?
The most common causes of U18CB include: Active safety control module 2 malfunction; Open or short circuit in Flexray bus wiring; Problems with Flexray bus connectors; ECU malfunction.
How do I fix a U18CB diagnostic trouble code?
To fix U18CB: Check Flexray bus wiring and connectors for damage. Check power supply and grounding of active safety control module 2. Check active safety control module 2 using diagnostic equipment. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U18CB?
Do not drive — repair immediately
How much does it cost to fix U18CB?
The estimated repair cost for U18CB is $56–556. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat