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2020 TESLA MODEL 3
Performance Dual Motor AWD•AWD•AUTOMATIC•ev
21 active safety recalls on this vehicle — view recalls
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Repairs0Labor317Torque4746Fluid5DTC1479Battery1Maintenance0Recalls21
P0934high severityPowertrain

Hydraulic Pressure Sensor Circuit Low

on 2020 Tesla Model 3 Performance Dual Motor AWD · AWD

What this code means

The PCM detected a low voltage condition in the transmission hydraulic pressure sensor circuit. This can lead to improper pressure regulation and shifting problems.

Symptoms

  • Slipping transmission
  • Harsh or erratic shifts
  • Transmission warning light

Common causes

  • Short to ground in sensor circuit
  • Faulty hydraulic pressure sensor
  • Damaged wiring or connector
  • PCM/TCM circuit fault

Diagnostic steps

  1. Scan for codes and freeze frame data
  2. Check sensor circuit for short to ground
  3. Inspect wiring and connector condition
  4. Test sensor voltage and replace if faulty
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Other Powertrain codes on this vehicle

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