Intake Air Temperature Sensor 1 Circuit Low

Descripción

This code means the Intake Air Temperature (IAT) sensor is reporting a signal that is too low. This could indicate a short circuit or a faulty sensor that is incorrectly reading a very cold temperature.

Pasos de reparación

1. 1 Inspect the IAT sensor electrical connector for looseness, corrosion, or damage and clean or reseat it as needed.
2. 2 Check the IAT sensor wiring harness for signs of damage, chafing, or a short to ground, and repair any damaged wires.
3. 3 Test the IAT sensor resistance with a multimeter to verify it matches manufacturer specifications at the current ambient temperature.
4. 4 Replace the Intake Air Temperature (IAT) sensor if resistance readings are out of specification.
5. 5 Check the IAT sensor signal voltage at the ECM connector to rule out wiring issues between the sensor and the module.
6. 6 Inspect the ECM connector pins for corrosion or bent pins and repair as needed.
7. 7 Have the Engine Control Module (ECM) tested and replaced if all sensor and wiring checks pass but the code persists.

Diagnóstico y costo