E2
What code E2 means on a Apollo electric scooter, what causes it, and which part to check first.
● SEVERITY: MEDIUM
Apollo E2 means: Brake sensor error. The documented cause is: Brake lever sensor stuck or damaged
What E2 means
Brake sensor error
The display shows E2 and the machine stops until the fault is cleared.
What the technical documentation says
Causes documented in the technical source published by estarbikes.com
| DOCUMENTED CAUSE OR CHECK |
|---|
| Brake lever sensor stuck or damaged |
Replacement parts
Tools you'll need
Worth repairing, or worth replacing?
The battery: how long it lasts, when to replace it, what it costs
Before you open anything
Switch the scooter off and disconnect the battery before opening the deck. The controller holds a charge after power-off, and the motor phase wires carry enough current to arc. If the battery is swollen, dented or has been soaked, stop and have it checked: lithium cells fail violently.
What to check, in order
From the quickest check to the one that needs a technician.
Find a specialist
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Frequently asked questions
What does E2 mean on a Apollo?
Brake sensor error The documented cause is: Brake lever sensor stuck or damaged
Can I fix E2 myself?
It depends on the part involved: Brake lever sensor stuck or damaged Clearing a filter or straightening a hose is within reach of anyone; anything behind a panel means mains electricity and water together — that is a job for a technician.
Can I keep riding with this code showing?
Yes: we document 7 other codes for Apollo on this electric scooters. They are listed at the bottom of this page, each with its own meaning.
Does the same code mean the same thing on other brands?
Often not. The same two characters can point to completely different faults depending on the manufacturer — always check the page for your own brand.