Yamaha PW-X/PW-X2/PWseries — Error Code 11

Reviewed by certified eBike technicians · Last updated July 30, 2026

Quick Answer

11 on Yamaha = Motor system error — internal drive unit fault or controller failure
Severity: Stop — motor system error · Do NOT continue riding

⚠️ STOP RIDING — This error indicates a critical safety issue. Continuing to ride may cause battery damage or safety hazard. Stop and diagnose before continuing.

Error 11 on your Yamaha indicates: Motor system error — internal drive unit fault or controller failure.
Stop — motor system error — Motor system error — internal drive unit fault or controller failure

Symptoms

Common Causes

Fix Steps

Step 1: 1. Power off bike and remove battery for 10 minutes
Step 2: 2. Reconnect battery and power on — check if error clears
Step 3: 3. Check for water exposure signs near motor housing
Step 4: 4. If Error 11 persists: motor requires dealer diagnostic
Step 5: 5. Yamaha motors require proprietary diagnostic tools — cannot fix at home
Step 6: 6. Under warranty (2 years): Yamaha replaces the drive unit free of charge
Step 7: 7. Out-of-warranty motor replacement: ~$350-600 at Yamaha dealer

Related Error Codes

Error 15

Torque sensor calibration error — sensor reading out of range or signal lost

Error 09

Speed sensor signal abnormal — rear wheel speed signal lost or erratic during operation

Error 12

Speed sensor error — wheel speed signal lost or erratic

Always disconnect the battery before inspecting wiring.

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