P1405moderate severityPowertrain

Turbo Pressure Sensor Circuit

on 1997 Toyota 4Runner 3.0L V6 · 4WD

What this code means

The ECM detected a fault in the turbo boost pressure sensor circuit.

Symptoms

  • CEL
  • Loss of boost
  • Reduced power
  • Poor acceleration

Common causes

  • Faulty boost sensor
  • Damaged wiring
  • Boost leak
  • Corroded connector

Diagnostic steps

  1. Test sensor voltage
  2. Check for boost leaks
  3. Inspect wiring
  4. Compare to specs

Repair notes

Replace boost pressure sensor.

Other Powertrain codes on this vehicle

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