P00E9
Intake Air Temperature Sensor 3 Circuit Range/Performance Bank 1
Generic OBD-II
Common symptoms
What you'll notice
- Check the wiring and connections of the Intake Air Temperature (IAT) sensor
- Clean the IAT sensor and ensure it is free from dirt or debris
- Replace the IAT sensor if it is faulty or damaged
- Inspect the air intake system for any leaks or blockages
- Reset the vehicle's ECU (Engine Control Unit) to clear any stored error codes and retest the system
Common causes
Most likely first
- Faulty intake air temperature sensor
- Loose or damaged wiring connections to the intake air temperature sensor
- Faulty engine control module (ECM)
- Air intake blockage or restriction
- Faulty intake air temperature sensor circuitry
How to diagnose & fix
Work through it in order
- Engine misfires or runs rough
- Decreased fuel efficiency
- Difficulty starting the engine
- Rough idle or stalling
- Increased emissions or failed emissions test
Read & clear P00E9 yourself
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