U01A7
Lost Communication With Hybrid/EV Battery Interface Control Module H
U01A7 is an OBD-II diagnostic trouble code meaning: Lost Communication With Hybrid/EV Battery Interface Control Module H. Common causes: open or short circuit in the can bus, battery control module malfunction. Estimated repair cost: $56–278.
Symptoms
- Check Engine light comes on
- The car may go into emergency mode
- Reduced engine power
- Errors in the operation of the hybrid system
- Inability to charge the battery
Causes
- Open or short circuit in the CAN bus
- Battery control module malfunction
- Module power problems
- Corroded or damaged connectors
- Software error in the module
How to Fix
- Check the integrity of the CAN bus
- Diagnose the battery control module
- Check power supply and grounding of the module
- Inspect connectors for damage
- Update module software
Related codes
Error U01A7 by Vehicle Brand
FAQ
What does the U01A7 code mean?
U01A7 is an OBD-II diagnostic trouble code that indicates: Lost Communication With Hybrid/EV Battery Interface Control Module H
What causes a U01A7 error code?
The most common causes of U01A7 include: Open or short circuit in the CAN bus; Battery control module malfunction; Module power problems; Corroded or damaged connectors.
How do I fix a U01A7 diagnostic trouble code?
To fix U01A7: Check the integrity of the CAN bus. Diagnose the battery control module. Check power supply and grounding of the module. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U01A7?
Limited driving only, diagnose soon
How much does it cost to fix U01A7?
The estimated repair cost for U01A7 is $56–278. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat