Lost Communication With Hybrid/EV Battery Interface Control Module D

Where it lives

For U01A3, start at the module the description names.

Check these first

• A faulty hybrid battery interface control module D
• Corroded or damaged connector pins at interface module D
• Loss of power or ground to interface module D
• Interface module D not talking on the CAN bus
• Water damage or overheating of interface module D

What to do next

1. Inspect the interface module D connector pins for corrosion
2. Check power and ground at interface module D
3. Verify interface module D communicates on the CAN bus
4. Reprogram the hybrid control module if calibration is the cause
5. Replace hybrid battery interface control module D if it stays offline
6. Clear the code and retest

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