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Informational· MBB / BMS log file

SelfTest finished with warnings

The BMS completed its self-test but raised one or more non-fatal warning flags (a bitfield) — noted diagnostics rather than a hard failure.

SystemSource: BMSLog file condition
Last updated: July 30, 2026

What it means

The BMS completed its self-test but raised one or more non-fatal warning flags (a bitfield) — noted diagnostics rather than a hard failure.

InformationalNormal operation events, no action required.

Likely causes

  • Minor self-diagnostic flags that do not block operation

What to do

  1. 1Benign if the bike operates normally
  2. 2The flag value identifies which check was flagged for a technician if it recurs

Which bikes use this table

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

Questions

What does "SelfTest finished with warnings" mean in a Zero log?

The BMS completed its self-test but raised one or more non-fatal warning flags (a bitfield) — noted diagnostics rather than a hard failure. It is written by the BMS. It is classed as informational: normal operation events, no action required.

What should I do about it?

Benign if the bike operates normally. The flag value identifies which check was flagged for a technician if it recurs.

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.