U01A8
Lost Communication With Hybrid/EV Battery Interface Control Module I
U01A8 is an OBD-II diagnostic trouble code meaning: Lost Communication With Hybrid/EV Battery Interface Control Module I. Common causes: open or short circuit in the can bus, problems with power supply to the battery management module. Estimated repair cost: $167–556.
Symptoms
- Check Engine light comes on
- The car goes into emergency mode
- Reduced engine power
- Battery charging problems
- Inability to switch to electric mode
Causes
- Open or short circuit in the CAN bus
- Problems with power supply to the battery management module
- Malfunction of the control module itself
- Corroded or damaged connectors
- Problems with the module software
How to Fix
- Check the integrity of the CAN bus and wiring
- Check the power and ground of the control module
- Inspect connectors for corrosion or damage
- Diagnose the battery control module
- If necessary, replace the control module
- Repair only from an authorized dealer
Related codes
Error U01A8 by Vehicle Brand
FAQ
What does the U01A8 code mean?
U01A8 is an OBD-II diagnostic trouble code that indicates: Lost Communication With Hybrid/EV Battery Interface Control Module I
What causes a U01A8 error code?
The most common causes of U01A8 include: Open or short circuit in the CAN bus; Problems with power supply to the battery management module; Malfunction of the control module itself; Corroded or damaged connectors.
How do I fix a U01A8 diagnostic trouble code?
To fix U01A8: Check the integrity of the CAN bus and wiring. Check the power and ground of the control module. Inspect connectors for corrosion or damage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U01A8?
Limited driving only, diagnose soon
How much does it cost to fix U01A8?
The estimated repair cost for U01A8 is $167–556. Actual cost depends on your vehicle, location, and labor rates.
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