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2021 TESLA MODEL S
Plaid Tri Motor AWD•AWD•AUTOMATIC•ev
24 active safety recalls on this vehicle — view recalls
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Repairs0Labor322Torque4801Fluid5DTC726Battery1Maintenance0Recalls24
P0563high severityPowertrain

System Voltage High

on 2021 Tesla Model S Plaid Tri Motor AWD · AWD

What this code means

The system voltage is above the acceptable threshold.

Symptoms

  • Check Engine Light
  • Bulbs burning out frequently
  • Battery swelling
  • Electrical component damage

Common causes

  • Faulty voltage regulator
  • Faulty alternator
  • Bad battery sense wire
  • PCM-controlled charging issue

Diagnostic steps

  1. Test voltage at battery (should not exceed 15V)
  2. Test alternator regulator
  3. Check battery sense wire
  4. Test charging system

Repair notes

Overcharging can damage battery and electronics. Replace alternator/regulator. Urgent repair.

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🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Mechanic · 20+ years. Spot an error? Use the Help link above — a human reads every report.
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