VCBATT_a387 — Shorted Cell Instc

Full alert identifier: VCBATT_a387_shortedCellInstc

Alert description

The low voltage (LV) battery has failed a test that checks for shorted battery cells. May indicate the LV battery has a shorted cell and is unable to fully support the LV electrical system. Note: A single failure of this test does not reliably indicate a condition affecting LV battery function. Only after 5 failed tests will the vehicle controller set a separate alert indicating the LV battery has a shorted cell.

Potential impact

The LV battery may have at least one shorted cell, which could prevent it from adequately supporting the vehicle's electrical systems.

Set condition

The LV battery has failed a test checking for a shorted battery cell. Alert log signal data should provide more information, including the load current, battery temperature, and voltage dip measured during testing.

Clear condition

Clears automatically before the next shorted cell test is run, or after vehicle controller resets / wakes from sleep.

Signals to check

Open this alert in Service Mode Plus and review the Payload tab. Use the field names below to identify the values shown by your vehicle.

Signal	Unit
IBS Temp `VCBATT_a387_IBSTemp`	degC
Max Current Reached `VCBATT_a387_maxCurrentReached`	A
Min Voltage Reached `VCBATT_a387_minVoltageReached`	V
Shorted Cell Fault Counter `VCBATT_a387_shortedCellFaultCounter`	—

Signal	Unit
Opportunistic Test `VCBATT_a387_opportunisticTest`	—

Check other alerts

With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of VCBATT_a387.