Intake Air Temperature Sensor 2 Circuit High

Descripción

This code means the second Intake Air Temperature (IAT) sensor is sending a signal that is too high. This usually points to a problem with the sensor or its wiring.

Pasos de reparación

1. 1 Inspect the electrical connector at the Intake Air Temperature (IAT) sensor 2 for looseness, corrosion, or damage, and reseat it firmly.
2. 2 Check the wiring harness leading to the IAT sensor 2 for signs of damage, chafing, or a short to voltage, and repair as needed.
3. 3 Test the IAT sensor 2 circuit with a multimeter to verify the signal voltage is within the manufacturer's specified range; a high voltage reading confirms the circuit issue.
4. 4 Replace the Intake Air Temperature sensor 2 if the sensor is found to be faulty or readings are out of specification.
5. 5 Inspect and test the ECM ground and reference voltage circuits to the IAT sensor 2 to rule out a power supply issue.
6. 6 If all wiring and the sensor test normal, have the Engine Control Module (ECM) professionally diagnosed and replaced if confirmed defective.

Diagnóstico y costo