P04E6
EGR Temperature Sensor D Circuit Range/Performance
Generic OBD-II
Common symptoms
What you'll notice
- Check and clean the EGR temperature sensor D circuit
- Inspect and replace the EGR temperature sensor if necessary
- Check for any vacuum leaks in the EGR system and repair or replace any damaged components
- Inspect and clean the EGR valve and its passages
Common causes
Most likely first
- Faulty EGR temperature sensor
- Carbon build
- up in the EGR system
- Incorrect voltage or resistance in the circuit of the EGR temperature sensor
- Blocked or clogged EGR valve
- Malfunctioning ECU (Engine Control Unit)
How to diagnose & fix
Work through it in order
- Check engine light illuminated
- Rough idle or stalling
- Reduced engine power or acceleration
- Increased fuel consumption
- Emissions test failure
Read & clear P04E6 yourself
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