VOLVO
ECM-P040985 - Exhaust Gas Recirculation Sensor A Circuit. Bus Signal / Message Failures. Signal above allowable range
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 fault concerns the signal from the EGR valve position sensor, which is above the permitted limit. The code is named as a bus or message fault, but the condition is an incorrect PWM signal from the sensor.
Mögliche Ursachen
- Fault codes ECM-P040931 and ECM-P040984 may share the same cause and should be read together
- EGR valve is stuck in the open position
- EGR valve is stuck in the closed position
- Damaged position sensor
- Damaged EGR valve
- Contact resistance, oxidation or an open circuit in the signal cable and connectors
Was Sie tun können
- 1Start the engine and read the fault status with a diagnostic tool, if you have one
- 2Check that the EGR valve is not stuck in the open or closed position
- 3Check the connectors to the position sensor and the EGR valve for contact resistance and oxidation
- 4Use a multimeter to check that the signal cable has no open circuit
- 5Clean the EGR valve of dirt and soot if it is clogged
- 6If the fault remains, have a workshop check the position sensor
Symptome, die Sie bemerken können1
- No noticeable symptoms for the driver
Was der Fehler beeinflussen kann1
- EGR control is lost
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.