VOLVO
ECM-P040421 - Exhaust Gas Recirculation Control Circuit Range/Performance. General Signal Failures. Signal too low
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
5 modellerS80 (2007–), V70 (2008–), XC60 (2009–), XC70 (2008–), XC90 (2003–)
Vis modeller per årsmodell og motor (6)
- Volvo S80 (2007–)2007–2009Kun motor: D5244T4, D5244T5
- Volvo V70 (2008–)2008–2009Kun motor: D5244T4, D5244T5
- Volvo XC60 (2009–)2009Alle motorer unntatt: B6304T2
- Volvo XC70 (2008–)2008Alle motorer unntatt: B6324S
- Volvo XC70 (2008–)2009Kun motor: D5244T4, D5244T5
- Volvo XC90 (2003–)2013–2014Kun motor: D5244T18, D5244T5
Hva betyr feilkoden?
The code states that the signal is too low, but the condition for setting it is that the flow through the EGR system is too high. The ECM monitors the EGR function and can show the fault while the engine runs.
Mulige årsaker
- Sticking EGR valve
- Damaged EGR valve
Hva du kan gjøre
- 1Check that the EGR valve moves freely and is not sticking
- 2Clean the EGR valve of dirt and soot if it is clogged
- 3Inspect the O-ring and gasket on the EGR valve for damage
- 4If you have a diagnostic tool, activate the EGR valve and listen for a ticking sound
- 5Read and clear the fault code, then road test the car to see whether it comes back
- 6If the fault remains, have a workshop check the EGR valve
Symptomer du kan merke2
- The engine performs worse than usual
- The idle is uneven
Generell veiledning for bileiere. Feilsøking på bilen kan peke på en annen årsak.