P04E8
EGR Temperature Sensor D Circuit High
Generic OBD-II
Common symptoms
What you'll notice
- Check the wiring and connections to the EGR temperature sensor
- Clean or replace the EGR temperature sensor
- Inspect and clean the EGR valve
- Inspect and clean the intake manifold
Common causes
Most likely first
- Faulty EGR temperature sensor
- Wiring issues or connections related to the EGR temperature sensor
- ECM (engine control module) malfunction
- Exhaust gas recirculation (EGR) valve malfunction
- Carbon build
- up in the EGR system
How to diagnose & fix
Work through it in order
- Check engine light illuminates on the dashboard
- Poor engine performance or hesitation during acceleration
- Excessive fuel consumption
- Engine stalling or rough idling
- Increased emissions or exhaust smoke
Read & clear P04E8 yourself
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