U02AB
Lost Communication With Vehicle Thermal Management Control Module
U02AB is an OBD-II diagnostic trouble code meaning: Lost Communication With Vehicle Thermal Management Control Module. Common causes: open or short circuit in the communication circuit, poor contact in the module connector. Estimated repair cost: $56–167.
Symptoms
- Incorrect operation of the cooling system
- Problems with interior heating
- Check Engine light comes on
- Reduced engine efficiency
- Errors in other related systems
Causes
- Open or short circuit in the communication circuit
- Poor contact in the module connector
- Thermal control module malfunction
- Module power problems
- ECU software error
How to Fix
- Check the integrity of the wiring harness to the module
- Inspect and clean the contacts in the connectors
- Check the power supply and ground of the module
- Test the thermoregulation control module
- Update ECU software if necessary
Related codes
Error U02AB by Vehicle Brand
FAQ
What does the U02AB code mean?
U02AB is an OBD-II diagnostic trouble code that indicates: Lost Communication With Vehicle Thermal Management Control Module
What causes a U02AB error code?
The most common causes of U02AB include: Open or short circuit in the communication circuit; Poor contact in the module connector; Thermal control module malfunction; Module power problems.
How do I fix a U02AB diagnostic trouble code?
To fix U02AB: Check the integrity of the wiring harness to the module. Inspect and clean the contacts in the connectors. Check the power supply and ground of the module. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U02AB?
Limited driving only, diagnose soon
How much does it cost to fix U02AB?
The estimated repair cost for U02AB is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat