Common Symptoms
- Check Engine Light illuminated
- Poor fuel economy
- Rough idle or hesitation during acceleration
- Black smoke from exhaust under load
- Engine may run in limp mode with reduced power
Most Likely Root Causes
- Faulty intake air temperature sensor 2
- Damaged or corroded wiring harness to IAT sensor 2
- Poor electrical connection at sensor connector
- Short to voltage in sensor circuit wiring
- Failed Engine Control Module (rare)
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Component Location
Intake Air Temperature Sensor 2 is typically located in the intake manifold, intercooler outlet, or secondary intake air path downstream of the primary IAT sensor.
Manufacturer Notes
Some manufacturers use dual IAT sensors in turbocharged or supercharged applications to monitor pre and post-intercooler air temperatures.
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