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RideFixer Android App Scan errors, compare sounds and diagnose e-bike issues on your phone.
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Bafang Error Code

04 - Throttle Not Returned

Throttle signal did not return to zero at startup.

Medium severity Caution rideability Soon urgency

What it means

Controller sees throttle active when powering on.

Common causes

  • Throttle stuck
  • Water in throttle
  • Throttle wiring fault

Symptoms

  • Error at startup
  • No throttle response
  • Bike refuses assist

How to fix it

  • Release throttle before startup
  • Dry throttle
  • Check connector
  • Replace throttle
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