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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
P0184low severityPowertrain

Fuel Temperature Sensor A Circuit Intermittent

on 2002 Toyota Highlander 2.4L I4 · AWD

What this code means

The fuel temperature sensor signal is cutting in and out intermittently. This is usually caused by a loose or corroded connection rather than a failed sensor.

Symptoms

  • Check engine light on
  • Erratic fuel trim
  • Occasional rough running

Common causes

  • Loose or corroded connector
  • Damaged sensor wiring
  • Failing fuel temperature sensor
  • Faulty PCM

Diagnostic steps

  1. Scan for stored and pending codes
  2. Inspect sensor connector and wiring
  3. Wiggle-test harness while monitoring signal
  4. Replace sensor if signal drops out
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Other Powertrain codes on this vehicle

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