VOLVO
ECM-640C - Turbocharger (TC) control system. 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)2003–2004Nur Motor: B5254T2
- 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)2003–2004Nur Motor: 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)2003–2004, 2008Nur Motor: B5254T2
- Volvo V70 (2000–2008)2005Nur Motor: B5204T5, B5244T4, B5244T5, B5254T2, B5254T4
- Volvo V70 (2000–2008)2006–2007Nur Motor: B5204T5, B5244T5, B5254T2, B5254T4
- Volvo V70 XC / XC70 (2001–2007)2003–2004, 2007Nur Motor: B5254T2
- Volvo V70 XC / XC70 (2001–2007)2005Alle Motoren außer: D5244T
- Volvo V70 XC / XC70 (2001–2007)2006Nur Motor: B5244T4, B5254T2
- Volvo XC90 (2003–)2003–2004, 2007–2011Nur Motor: B5254T2
- Volvo XC90 (2003–)2005–2006Nur Motor: B5254T2, B6294T
Was bedeutet der Fehlercode?
The engine control module compares the measured boost pressure, taken before the throttle, with the calculated boost pressure after the throttle. If the ratio between the two becomes incorrect, the fault code is set. This means the signal from the boost pressure system is too high compared with the calculated value.
Mögliche Ursachen
- Damaged boost pressure sensor
- Loose boost pressure sensor
- Air leak between the turbocharger and the throttle unit
- Large air leak in the intake manifold after the throttle unit
- Damaged non-return valve to the crankcase ventilation
- Software fault in the engine control module
Was Sie tun können
- 1Check that the boost pressure sensor is fully seated and has not come loose, and that its connector is clean and undamaged
- 2Look for air leaks in the intake system, especially the hose between the turbocharger and the throttle unit. Check for loose clamps and cracks
- 3Check that the crankcase ventilation non-return valve is fitted correctly and has no damage
- 4If no leak and no loose sensor is found, the boost pressure sensor is probably damaged. Have a workshop replace it and check the fault
- 5Have a workshop check whether a software update is available for the engine control module, since old software can cause this code
Symptome, die Sie bemerken können1
- Poor performance
Was der Fehler beeinflussen kann1
- Boost pressure becomes lower than normal
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.