Hybrid/EV Battery Cell Balancing Circuit A Range/Performance

Check these first

• Cell balancing circuit A not bleeding the target cells evenly
• A failed balance resistor or switch in circuit A
• A chafed or open wire in the circuit A harness
• A weak ground on balancing circuit A
• A battery monitoring module fault on circuit A

What to do next

1. Read individual cell voltages and look for imbalance
2. Test the circuit A balance resistor and switch
3. Check the circuit A harness for opens and chafes
4. Verify ground at balancing circuit A
5. Replace the battery monitoring module if circuit A fails its self test
6. Clear the code and retest

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