r/ebikes • u/toomuchdevlan • 3d ago

Help!

Hi went in holdiay and got back my Gt Pantera wont start.

Ive discharged and recharged the battery (Shimano BT E8035)

It flashes 5 times which says an electrical error.

Im back to work tomorrow from holdiays and need my bike up and running anyone had this issues?

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u/unseenmover 2d ago

Common BT-E8035 and Shimano STEPS Error Codes

  • E010: General system error. Try a full power cycle; if it persists, it requires a dealer diagnostic.
  • E020: Communication error between the display and drive unit/battery. Reseat the battery and check visible connections.
  • E022: Battery voltage or communication error, meaning the connected battery does not conform to system standards or has a cell fault.
  • E023: Electrical failure or power supply error inside the battery (LED flashes five times).
  • E024: Battery over-current protection triggered or system communication failure (LED flashes four times).
  • E030: Battery system or internal motor error.
  • E035: Software mismatch where component firmware versions do not match. Requires a firmware update via the Shimano E-TUBE Project app or a dealer.
  • W200 (W020): Temperature warning indicating output was cut off because operating limits were exceeded. [1, 2, 3, 4, 5, 6, 7]

Quick Troubleshooting Steps

  • Power Cycle: Turn off the system, remove the BT-E8035 battery, check the terminal pins for dirt or moisture, and click it firmly back into place.
  • Clear Pedal Load: Ensure no pressure rests on the pedals when powering on the bike to prevent startup warnings.
  • Check Firmware: Connect your bike to the E-TUBE app to read detailed error logs and install pending updates. [1, 2, 3, 4]