625
Thermo King
Warning

Check Intake Air Temperature Sensor

Error in the Intake Air Temperature (IAT) sensor for the engine.

Possible causes

  • IAT sensor fouled with oil
  • Loose sensor connector
  • Wiring fault to the ECU

Recommended actions

  • Clean the sensor with dielectric cleaner
  • Verify electrical connection
  • Compare reading with coolant sensor while cold

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