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2018 TESLA MODEL 3
Long Range Dual Motor AWD•AWD•AUTOMATIC•ev
18 active safety recalls on this vehicle — view recalls
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Repairs0Labor322Torque3852Fluid5DTC726Battery1Maintenance0Recalls18
P2122critical severityPowertrain

Throttle/Pedal Position Sensor/Switch D Circuit Low

on 2018 Tesla Model 3 Long Range Dual Motor AWD · AWD

What this code means

Low voltage from accelerator pedal position sensor D.

Symptoms

  • Limp mode
  • Engine at idle
  • Check engine light

Common causes

  • Failed APP sensor
  • Short to ground in wiring
  • Corroded connector

Diagnostic steps

  1. Measure voltage at APP sensor D
  2. Check wiring
  3. Swap sensor if dual-assembly

Repair notes

Replace accelerator pedal assembly or repair wiring.

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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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