VOLVO
ECM-304C - Rear knock sensor (KS). Signal too high
System
Motorsteuergerät (ECM)
Volvo-Modelle, für die dieser Fehlercode gilt
Gilt für folgende Modelle:
9 ModelleC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), S60 (2001–2009), S80 (1999–2006), V50 (2004–2013), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
Modelle nach Baujahr und Motor anzeigen (23)
- Volvo C30 (2007–2013)2007Nur Motor: B5254T3
- Volvo C30 (2007–2013)2008–2013Nur Motor: B5254T7
- Volvo C70 (2006–2013)2006–2007Nur Motor: B5254T3
- Volvo C70 (2006–2013)2008–2013Nur Motor: B5254T7
- Volvo S40 (2004–2013)2005–2007Nur Motor: B5254T3
- Volvo S40 (2004–2013)2008Nur Motor: B5254T3, B5254T7
- Volvo S40 (2004–2013)2009–2012Nur Motor: B5254T7
- 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 V50 (2004–2013)2005–2007Nur Motor: B5254T3
- Volvo V50 (2004–2013)2008–2012Nur Motor: B5254T7
- 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?
Under certain operating conditions the control module monitors the rear knock sensor signal. If the signal is too high, the code is stored, and it can be checked while the engine runs. An engine noise or a sensor that has been fitted incorrectly can cause the signal to become too strong.
Mögliche Ursachen
- Signal wire short-circuited to supply voltage
- Noise from the engine
- Signal wire short-circuited to ground
- Incorrectly installed knock sensor
- Damaged temperature sensor
Was Sie tun können
- 1Check that the rear knock sensor is firmly fitted and tightened correctly
- 2Start the engine and listen for noise, since this can cause a signal that is too high
- 3Read and clear the fault code, run the engine and check whether it returns
- 4Follow the signal wire from the rear knock sensor and look for chafing or a short to the battery positive lead
- 5Use a multimeter to check that the ground wire has no contact with supply voltage
- 6Have a workshop check the knock sensor if the fault remains
Symptome, die Sie bemerken können1
- Poor performance
Was der Fehler beeinflussen kann2
- Ignition advance is pulled back to protect the engine
- Boost pressure is reduced
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.