What it means
A general circuit fault is detected for intake air temperature sensor 3 on bank 1.
At a glance
- Usually lights the check-engine light
- Affects emissions; the car can fail an emissions test
How it works
Intake air temperature sensor 3 on bank 1 measures air temperature at its location and sends a signal to the control module. P00E8 sets when the module detects a general electrical circuit fault for that sensor; the code does not specify whether the fault is an open, short, sensor failure, or poor connection.
Common causes
Most likely first.
- Failed intake air temperature sensor 3
- Damaged wiring or poor connector contact
- Open or short in the sensor circuit
Symptoms
- Check-engine light on
- Reduced engine performance or power
- Poor fuel economy
How to diagnose it
- Review freeze-frame and live data for intake air temperature sensor 3 on bank 1 to see whether its reading is missing or implausible.
- Locate sensor 3 on bank 1 using vehicle service information and inspect its connector and wiring for damage, corrosion, or loose contact.
- Check the sensor 3 circuit for opens or shorts using the vehicle wiring diagram and appropriate electrical test method.
- Check connector pin fit and circuit continuity while gently moving the sensor 3 harness to reveal an intermittent connection.
- If the wiring and connector pass, test bank 1 intake air temperature sensor 3 against the manufacturer’s specification.
Common fixes
- Repair an open or shorted wire in the sensor 3 circuit on bank 1.
- Clean or repair loose, corroded, or damaged connector pins at sensor 3.
- Repair harness damage or restore secure routing near the bank 1 sensor.
- Replace intake air temperature sensor 3 on bank 1 if it fails testing.
Can I keep driving?
A short drive may be possible if the engine runs normally, but inaccurate bank 1 temperature data can affect power and fuel economy. Avoid hard acceleration if performance is reduced, and repair the circuit soon.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.