Common Symptoms
- Check engine light illuminated
- Poor fuel economy
- Rough idle or hesitation during acceleration
- Engine may run rich or lean intermittently
- Reduced engine performance under load
- Hard starting in extreme temperatures
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 circuit or open circuit in sensor wiring
- Water intrusion or contamination at sensor connector
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Component Location
Intake air temperature sensor 2 is typically located in the intake air duct downstream of the intercooler or in a secondary air intake path.
Manufacturer Notes
Some manufacturers use multiple IAT sensors in turbocharged or supercharged applications to monitor pre and post intercooler temperatures.
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