VOLVO
ECM-P040000 - Exhaust Gas Recirculation Flow. General Failure Information. No sub type information
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
Feilkoden har ulik betydning avhengig av modell, årsmodell eller motor. Velg betydningen som gjelder din bil.
Gjelder følgende modeller:
2 modellerS80 (2007–), V70 (2008–)
Vis modeller per årsmodell og motor (2)
Hva betyr feilkoden?
The engine control module (ECM) compares the pressure in the inlet pipe when EGR control is active with the pressure when it is inactive. The fault is set when the pressure does not change enough between the two states. This can be caused by the EGR valve jamming in the open position, a blocked exhaust system, or damaged control for the EGR valve.
Mulige årsaker
- EGR valve has jammed in the open position
- Blocked exhaust system
- Damaged control for the EGR valve
Hva du kan gjøre
- 1Check that the exhaust system is not blocked or clogged, since this affects the flow of exhaust gases
- 2Check that the EGR valve is not sticking or has jammed in the open position
- 3Clean the EGR valve of dirt and soot if it is clogged
- 4Check that the control for the EGR valve, including its cables and connectors, is not damaged
- 5If you have a diagnostic tool, read the EGR valve value at idle and compare it with the engine during a road test
- 6If the fault remains after this, have a workshop replace the EGR valve
Symptomer du kan merke2
- The malfunction indicator lamp (MIL) is lit
- The idle is uneven
Generell veiledning for bileiere. Feilsøking på bilen kan peke på en annen årsak.