VOLVO
ECM-126B - Boost pressure sensor. Signal missing
System
Motorsteuergerät (ECM)
Volvo-Modelle, für die dieser Fehlercode gilt
Dieser Fehlercode hat je nach Modell, Modelljahr oder Motor unterschiedliche Bedeutungen. Wählen Sie die Bedeutung, die für Ihr Fahrzeug gilt.
Gilt für folgende Modelle:
5 ModelleS60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
Modelle nach Baujahr und Motor anzeigen (14)
- Volvo S60 (2001–2009)2005–2006Nur Motor: B5204T5, B5244T4, B5244T5, B5254T2, B5254T4
- Volvo S60 (2001–2009)2007Nur Motor: B5204T5, B5244T5, B5254T2, B5254T4
- Volvo S60 (2001–2009)2008–2009Nur Motor: B5204T5, B5244T5, B5254T2
- Volvo S80 (1999–2006)2005–2006Nur Motor: B5204T5, B5244T4, B5254T2, B6294S2, B6294T
- Volvo V70 (2000–2008)2005Nur Motor: B5204T5, B5244T4, B5244T5, B5254T2, B5254T4
- Volvo V70 (2000–2008)2006–2007Nur Motor: B5204T5, B5244T5, B5254T2, B5254T4
- Volvo V70 (2000–2008)2008Nur Motor: B5254T2
- Volvo V70 XC / XC70 (2001–2007)2005Alle Motoren außer: D5244T
- Volvo V70 XC / XC70 (2001–2007)2006Nur Motor: B5244T4, B5254T2
- Volvo V70 XC / XC70 (2001–2007)2007Nur Motor: B5254T2
- Volvo XC90 (2003–)2005–2006Nur Motor: B5254T2, B6294T
- Volvo XC90 (2003–)2007–2012Nur Motor: B5254T2
- Volvo XC90 (2003–)2013–2014Nur Motor: B5254T9
- Volvo XC90 (2003–)2015
Was bedeutet der Fehlercode?
The engine control module (ECM) compares the signal from the boost pressure sensor with a value it calculates from the atmospheric pressure sensor. Even though the fault says the signal is missing, the signal itself is within its normal range, only lower than expected. The fault is checked with the ignition on and the engine running, and it can limit boost pressure so the car feels weaker.
Mögliche Ursachen
- Contact resistance or oxidation in the boost pressure sensor connector
- Loose boost pressure sensor
- Damaged boost pressure sensor
Was Sie tun können
- 1Read the fault code, clear it and test drive the car to see whether it returns
- 2Check that the boost pressure sensor connector is fully seated and free from corrosion and oxidation
- 3Check that the boost pressure sensor is properly fitted and that there are no air leaks in the hoses around it
- 4If you have a diagnostic tool: compare boost pressure in live data with atmospheric pressure, ignition on and engine off; the two values should be close
- 5If the connector and sensor look fine, have a workshop with diagnostic equipment check the sensor signal
Symptome, die Sie bemerken können2
- Engine warning lamp comes on
- Noticeably reduced performance
Was der Fehler beeinflussen kann1
- Boost pressure is limited
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.