VOLVO
ECM-4438 - Exhaust gas recirculation (EGR) control. Jammed
Układ
Sterownik silnika (ECM)
Modele Volvo, których dotyczy ten kod błędu
Dotyczy następujących modeli:
3 modeleC30 (2007–2013), S40 (2004–2013), V50 (2004–2013)
Pokaż modele wg rocznika i silnika (3)
Co oznacza ten kod błędu?
The engine control module (ECM) monitors EGR control. When the valve jams, for example from soot or dirt, and does not follow the control signals, the code is set. The fault can also come from the wiring or connectors to the valve.
Możliwe przyczyny
- Loose connections, contact resistance or oxidation at the EGR valve terminals
- EGR valve jams, for example from dirt or soot
- Break in the wiring to the EGR valve
- Wiring to the EGR valve shorted to ground or supply voltage
- Damaged EGR valve
Co możesz zrobić
- 1Read off and note the fault code, erase it and test-drive the engine to see whether it returns
- 2Look at the EGR valve connector to see whether it is loose or oxidised
- 3Check mechanically whether the valve is clogged with soot and sticking
- 4With a multimeter you can check for a break and for contact with ground in the wiring to the EGR valve
- 5If the fault remains, have a workshop with diagnostic equipment check the valve and its wiring
Objawy, które możesz zauważyć2
- Message shown in the text display
- Check engine light lit
Na co może wpływać usterka2
- EGR control is disconnected
- Engine output is limited
Ogólne wskazówki dla właścicieli. Diagnostyka na samochodzie może wskazać inną przyczynę.