VOLVO
ECM-24CB - Front heated oxygen sensor (HO2S), bank 1. Signal missing
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
4 modellerC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
Vis modeller per årsmodell og motor (9)
- Volvo C30 (2007–2013)2007Kun motor: B5254T3
- Volvo C30 (2007–2013)2008–2013Kun motor: B5254T7
- Volvo C70 (2006–2013)2006–2007Kun motor: B5254T3
- Volvo C70 (2006–2013)2008–2013Kun motor: B5254T7
- Volvo S40 (2004–2013)2005–2007Kun motor: B5254T3
- Volvo S40 (2004–2013)2008Kun motor: B5254T3, B5254T7
- Volvo S40 (2004–2013)2009–2012Kun motor: B5254T7
- Volvo V50 (2004–2013)2005–2007Kun motor: B5254T3
- Volvo V50 (2004–2013)2008–2012Kun motor: B5254T7
Hva betyr feilkoden?
Although the code is titled signal missing, it applies when the front and rear sensors give conflicting pictures of the mixture, or when the front signal deviates too much from what the engine control module expects. The fault can then lie in either sensor or in their circuits.
Mulige årsaker
- Leakage in the exhaust system
- Front sensor shows an overly rich mixture
- Contact resistance or oxidation in the connectors
- Damaged oxygen sensor
Hva du kan gjøre
- 1Read and note the code, clear it and road test to see whether it comes back
- 2Make sure the connectors to the front and rear oxygen sensors are clean, firmly seated and free from oxidation
- 3Look for air leaks in the exhaust system, especially upstream of the front sensor
- 4If there is no leak, have a workshop with diagnostic equipment try replacing the oxygen sensors, since a damaged front or rear sensor can also cause the fault
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.