P044EEGR Sensor C Circuit Intermittent/Erratic
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- Exhaust gas recirculation (EGR) routes part of the exhaust back into the intake to lower combustion temperature and NOx. What EGR sensor C is depends on the maker: on Ford petrol engines from 2020 it is the DPFE sensor, which measures the pressure drop across an orifice in the EGR pipe (sensor A there is the valve position sensor); GM diesels assign it to the position sensor of a low-pressure EGR valve, but only within fault groups. P044E means short dropouts or jumps in its signal, too brief for P044C/P044D or with an impossible rate of change. No manufacturer document available to us uses this code; Ford applies the same idea to sensor A as P046D, where a limit violation of only 0.4 s counts. EGR diagnosis is then suspended.
- What you may notice
- Check engine light on, may come and go
- Usually no driving symptom
- Code returns after clearing
- Likely causes
- LikelyLoose contact in the connector or broken wire
- PossibleCondensate in the sensor or hose (DPFE)
- PossibleSensor unstable internally
- RareInterference or ground problems
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Easy · Often possible to do yourself.Typical cost: €30 – €250
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.