Intake Air Temperature Sensor 3 Circuit Intermittent/Erratic Bank 2

Descripción

This code indicates that the engine computer is receiving inconsistent or erratic signals from the third intake air temperature sensor on 'Bank 2'. This sensor's readings fluctuate, making it difficult for the computer to accurately control engine performance.

Pasos de reparación

1. 1 Check the electrical connector at the Intake Air Temperature Sensor 3 on Bank 2 for looseness, and reseat it firmly until it clicks.
2. 2 Inspect the sensor connector terminals and pins for corrosion, green buildup, or moisture — clean with electrical contact cleaner and a small brush if needed.
3. 3 Inspect the wiring harness running to the IAT sensor for chafing, fraying, broken insulation, or damage from heat or vibration, and repair any damaged sections.
4. 4 Use a multimeter to check the sensor circuit for proper voltage and ground signals at the connector — verify readings match manufacturer specifications.
5. 5 Wiggle-test the wiring and connector while monitoring live data with a scan tool to identify intermittent connection faults.
6. 6 Replace the Intake Air Temperature Sensor 3 on Bank 2 if the sensor readings are erratic or out of range despite good wiring and connections.
7. 7 Repair or replace the wiring harness section if damaged wires or intermittent shorts are confirmed during testing.

Diagnóstico y costo