VOLVO
ECM-126B - Boost pressure sensor. Signal missing
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:
5 modellerS60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
Vis modeller per årsmodell og motor (14)
- Volvo S60 (2001–2009)2005–2006Kun motor: B5204T5, B5244T4, B5244T5, B5254T2, B5254T4
- Volvo S60 (2001–2009)2007Kun motor: B5204T5, B5244T5, B5254T2, B5254T4
- Volvo S60 (2001–2009)2008–2009Kun motor: B5204T5, B5244T5, B5254T2
- Volvo S80 (1999–2006)2005–2006Kun motor: B5204T5, B5244T4, B5254T2, B6294S2, B6294T
- Volvo V70 (2000–2008)2005Kun motor: B5204T5, B5244T4, B5244T5, B5254T2, B5254T4
- Volvo V70 (2000–2008)2006–2007Kun motor: B5204T5, B5244T5, B5254T2, B5254T4
- Volvo V70 (2000–2008)2008Kun motor: B5254T2
- Volvo V70 XC / XC70 (2001–2007)2005Alle motorer unntatt: D5244T
- Volvo V70 XC / XC70 (2001–2007)2006Kun motor: B5244T4, B5254T2
- Volvo V70 XC / XC70 (2001–2007)2007Kun motor: B5254T2
- Volvo XC90 (2003–)2005–2006Kun motor: B5254T2, B6294T
- Volvo XC90 (2003–)2007–2012Kun motor: B5254T2
- Volvo XC90 (2003–)2013–2014Kun motor: B5254T9
- Volvo XC90 (2003–)2015
Hva betyr feilkoden?
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.
Mulige årsaker
- Contact resistance or oxidation in the boost pressure sensor connector
- Loose boost pressure sensor
- Damaged boost pressure sensor
Hva du kan gjøre
- 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
Symptomer du kan merke2
- Engine warning lamp comes on
- Noticeably reduced performance
Hva feilen kan påvirke1
- Boost pressure is limited
Generell veiledning for bileiere. Feilsøking på bilen kan peke på en annen årsak.