P04D0
EGR Temperature Sensor C Circuit Low
Generic OBD-II
Common symptoms
What you'll notice
- Check and clean the EGR temperature sensor
- Inspect and replace damaged wiring or connectors related to the EGR temperature sensor
- Test and replace the EGR temperature sensor if necessary
- Inspect and clean the EGR valve
- Check and repair any issues with the EGR system, such as clogs or leaks.
Common causes
Most likely first
- Malfunction or damage to the EGR temperature sensor C wiring
- Faulty EGR temperature sensor C
- Carbon buildup or clogging in the EGR system
- EGR valve stuck in the closed position
- Engine control module (ECM) malfunction or software issue
How to diagnose & fix
Work through it in order
- Check engine light illuminates on the dashboard
- Reduced engine power
- Hesitation or stumbling during acceleration
- Poor fuel efficiency
- Engine overheating
Read & clear P04D0 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.