Felkodsregister · low
P0405
EGR position sensor low input
EGR position sensor low input
Scope: 2.2D · System(s): EMS/diesel
Common causes
- EGR position sensor/valve
- wiring
- connector
- reference/ground
Quick checks
- Confirm freeze-frame and conditions when the code set
- Inspect connectors, grounds, and harness for the circuit named in the code
- Compare live sensor values vs expected (unplugged/biased sensors are common)
Typical fixes
- Check reference, ground and position signal
- inspect connector/wiring
- replace EGR assembly if sensor is integral and faulty.