U18AB
Transmission Range Control Module Lost Communication With Chassis Control Module On High Speed CAN Bus
U18AB is an OBD-II diagnostic trouble code meaning: Transmission Range Control Module Lost Communication With Chassis Control Module On High Speed CAN Bus. Common causes: broken or damaged can bus wires, corrosion of module connectors. Estimated repair cost: $56–222.
Symptoms
- Check Engine Light Is On
- Gear shifting problems
- Disabling stabilization systems
- Reduced engine power
- Errors in other CAN bus-related systems
Causes
- Broken or damaged CAN bus wires
- Corrosion of module connectors
- Range control module malfunction
- Chassis control module malfunction
- Problems with module power supply
How to Fix
- Check the integrity of the CAN bus wires
- Inspect connectors for corrosion and damage
- Check power supply of modules
- Scan modules for errors
- Replace the faulty module if necessary
Related codes
FAQ
What does the U18AB code mean?
U18AB is an OBD-II diagnostic trouble code that indicates: Transmission Range Control Module Lost Communication With Chassis Control Module On High Speed CAN Bus
What causes a U18AB error code?
The most common causes of U18AB include: Broken or damaged CAN bus wires; Corrosion of module connectors; Range control module malfunction; Chassis control module malfunction.
How do I fix a U18AB diagnostic trouble code?
To fix U18AB: Check the integrity of the CAN bus wires. Inspect connectors for corrosion and damage. Check power supply of modules. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U18AB?
Limited driving only, diagnose soon
How much does it cost to fix U18AB?
The estimated repair cost for U18AB is $56–222. Actual cost depends on your vehicle, location, and labor rates.
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