P00E9Intake Air Temperature Sensor 3 Circuit Range/Performance Bank 1
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- Intake air temperature sensor 3 is a third air temperature sensor in the intake path. On documented turbocharged engines with a humidity sensor it is the manifold temperature sensor behind the charge air cooler, an NTC thermistor read directly by the engine control module and used for cylinder filling and ignition timing. The numbering of intake air temperature sensors differs between manufacturers. P00E9: This is a plausibility check once per ignition cycle after a long standstill (eight hours in a documented case): if the other intake temperature sensors agree and this sensor deviates, or no two agree and this one deviates most, the code is set.
- What you may notice
- Check engine light on
- Usually no noticeable symptoms; substitute value used
- Slightly reduced power through knock protection possible
- Likely causes
- LikelySensor drifting or stuck
- PossibleContact resistance at the connector
- PossibleA reference sensor reading wrong
- RareSensor mounted wrongly or exposed to external heat
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Easy · Often possible to do yourself.Typical cost: €60 – €300
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.