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Warning· MBB / BMS log file

Charge Tank Communication Lost

Communication lost with optional Charge Tank module

Communication (CAN)Source: MBBLog file condition
Last updated: July 30, 2026

What it means

Communication lost with optional Charge Tank module

WarningMonitor the situation, may self-resolve.

Likely causes

  • Charge Tank not installed
  • Charge Tank connector loose
  • Charge Tank fault

What to do

  1. 1Normal if Charge Tank not installed
  2. 2Check Charge Tank connections if installed
  3. 3Charging will proceed with onboard charger only

Which bikes use this table

Recorded in the binary log rather than shown on the dash — every generation writes them.

Questions

What does "Charge Tank Communication Lost" mean in a Zero log?

Communication lost with optional Charge Tank module. It is written by the MBB. It is classed as warning: monitor the situation, may self-resolve.

What should I do about it?

Normal if Charge Tank not installed. Check Charge Tank connections if installed. Charging will proceed with onboard charger only.

See when this actually happened on your bike

A dash code tells you the fault; the log tells you the pack temperature, the state of charge and the ten minutes leading up to it.

Upload a log

Community reference: ZeroManual wiki entry

The code and its name are transcribed from Zero's own owner manuals; the severity, category and troubleshooting notes are ours. For official diagnostics, consult an authorized Zero Motorcycles dealer.