VOLVO
ECM-P040421 - Exhaust Gas Recirculation Control Circuit Range/Performance. General Signal Failures. Signal too low
System
Motorsteuergerät (ECM)
Volvo-Modelle, für die dieser Fehlercode gilt
Gilt für folgende Modelle:
5 ModelleS80 (2007–), V70 (2008–), XC60 (2009–), XC70 (2008–), XC90 (2003–)
Modelle nach Baujahr und Motor anzeigen (6)
- Volvo S80 (2007–)2007–2009Nur Motor: D5244T4, D5244T5
- Volvo V70 (2008–)2008–2009Nur Motor: D5244T4, D5244T5
- Volvo XC60 (2009–)2009Alle Motoren außer: B6304T2
- Volvo XC70 (2008–)2008Alle Motoren außer: B6324S
- Volvo XC70 (2008–)2009Nur Motor: D5244T4, D5244T5
- Volvo XC90 (2003–)2013–2014Nur Motor: D5244T18, D5244T5
Was bedeutet der Fehlercode?
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.
Mögliche Ursachen
- Sticking EGR valve
- Damaged EGR valve
Was Sie tun können
- 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
Symptome, die Sie bemerken können2
- The engine performs worse than usual
- The idle is uneven
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.