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2002 TOYOTA HIGHLANDER
2.4L I4•AWD•AUTOMATIC•gas•2AZ-FE
2 active safety recalls on this vehicle — view recalls
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Repairs0Labor485Torque3340Fluid10DTC1720Battery1Maintenance0Recalls2
P0812moderate severityPowertrain

Reverse Input Circuit

on 2002 Toyota Highlander 2.4L I4 · AWD

What this code means

A fault was detected in the reverse input signal circuit to the transmission control system. This can affect reverse gear engagement and reverse-related functions.

Symptoms

  • No or delayed reverse engagement
  • Reverse lights malfunction
  • Warning light illuminated

Common causes

  • Faulty reverse switch or sensor
  • Wiring or connector fault
  • Short or open in reverse circuit
  • Control module fault

Diagnostic steps

  1. Read transmission fault codes
  2. Inspect reverse switch and wiring
  3. Verify signal when selecting reverse
  4. Repair circuit or replace switch
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