VOLVO
ECM-P040404 - Exhaust Gas Recirculation Control Circuit Range/Performance. General Failure Information. System Internal Failures
Układ
Sterownik silnika (ECM)
Modele Volvo, których dotyczy ten kod błędu
Dotyczy następujących modeli:
5 modeliS80 (2007–), V70 (2008–), XC60 (2009–), XC70 (2008–), XC90 (2003–)
Pokaż modele wg rocznika i silnika (6)
- Volvo S80 (2007–)2007–2009Tylko silnik: D5244T4, D5244T5
- Volvo V70 (2008–)2008–2009Tylko silnik: D5244T4, D5244T5
- Volvo XC60 (2009–)2009Wszystkie silniki oprócz: B6304T2
- Volvo XC70 (2008–)2008Wszystkie silniki oprócz: B6324S
- Volvo XC70 (2008–)2009Tylko silnik: D5244T4, D5244T5
- Volvo XC90 (2003–)2013–2014Tylko silnik: D5244T18, D5244T5
Co oznacza ten kod błędu?
The fault is set when the ECM finds that returning to normal operation takes too long after soot particles have been burned off. The check can only run while soot is being burned.
Możliwe przyczyny
- Air leak in the intake system
- Contact resistance or oxidation in the connectors
- Sticking EGR valve
- Damaged throttle unit (intake damper)
Co możesz zrobić
- 1If other fault codes are stored in the control module, troubleshoot those first, since this code can be caused by faults in other engine functions
- 2Check that the EGR valve connector is firmly seated and not oxidised
- 3Check that the EGR valve is not sticking from soot or dirt and that it moves freely
- 4Check that the intake system does not leak air
- 5Check the throttle unit connector for contact resistance and oxidation, and see that the damper moves freely
- 6If you have a diagnostic tool, read the fault status for the code after the engine has run for a while
Objawy, które możesz zauważyć1
- No noticeable symptoms for the driver
Ogólne wskazówki dla właścicieli. Diagnostyka na samochodzie może wskazać inną przyczynę.