VOLVO
ECM-24BB - Front heated oxygen sensor (HO2S), bank 1. Signal missing
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
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?
Although the code is titled signal missing, it applies when the learned correction values of the two oxygen sensors diverge too far. The engine control module (ECM) compares the two values and stores the code when the deviation is too large. The fault may then lie in the front or rear sensor circuit.
Mulige årsaker
- Leakage in the exhaust system
- Oxygen sensor indicates an incorrectly rich fuel/air mixture
- Contact resistance or oxidation at the connections
- Damaged oxygen sensor
Hva du kan gjøre
- 1Read and note the code, clear it and road test to see whether it returns
- 2Look at the connectors to the front and rear oxygen sensors for contact resistance and oxidation
- 3Look for air leaks in the exhaust system, such as cracks and loose joints
- 4If the fault remains after these checks, have a workshop try replacing the oxygen sensors, since the code can also be set by a damaged front or rear sensor
Symptomer du kan merke1
- The malfunction indicator lamp (MIL) is lit
Hva feilen kan påvirke2
- Oxygen sensor control is switched off
- Catalytic converter diagnostics are switched off
Generell veiledning for bileiere. Feilsøking på bilen kan peke på en annen årsak.