VOLVO
ECM-24BB - Front heated oxygen sensor (HO2S), bank 1. Signal missing
System
Motorsteuergerät (ECM)
Volvo-Modelle, für die dieser Fehlercode 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?
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.
Mögliche Ursachen
- Leakage in the exhaust system
- Oxygen sensor indicates an incorrectly rich fuel/air mixture
- Contact resistance or oxidation at the connections
- Damaged oxygen sensor
Was Sie tun können
- 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
Symptome, die Sie bemerken können1
- The malfunction indicator lamp (MIL) is lit
Was der Fehler beeinflussen kann2
- Oxygen sensor control is switched off
- Catalytic converter diagnostics are switched off
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.