Lost Communication With Hybrid/EV Battery Pack Current Sensor A

Where it lives

For U064A, start at the sensor the description names.

Check these first

• The bus drops the hybrid battery pack current sensor A
• An open signal circuit in current sensor A
• A corroded connector at the battery pack sensor
• A short in the current sensor A harness
• A failed current sensor A element

What to do next

1. Read hybrid battery pack current sensor A on a scan tool
2. Inspect the sensor connector and high voltage wiring
3. Check the signal and ground circuits at the sensor
4. Compare the current reading against a known load
5. Replace battery pack current sensor A if it stays offline
6. Clear the code and retest

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