VOLVO
ECM-640D - Turbocharger (TC) control system. Signal too low
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)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, 2007–2009Nur Motor: B5254T2
- Volvo XC90 (2003–)2005–2006Nur Motor: B5254T2, B6294T
Was bedeutet der Fehlercode?
The engine control module checks the boost pressure by comparing the measured value from the boost pressure sensor, taken before the throttle, with the calculated value after the throttle. The fault code is set when the relationship between the two becomes wrong while turbo control is active. The signal is too low compared with the calculated value, so the measured boost pressure is below what the module expects.
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
- Faulty software in the engine control module
Was Sie tun können
- 1Check that the boost pressure sensor is correctly fitted and has not come loose
- 2Look for air leaks between the turbocharger and the throttle unit, especially in the hoses. Check for loose clamps and damaged hoses
- 3The crankcase ventilation non-return valve should sit in place and be free of any damage
- 4If no fault is found in the checks above, the boost pressure sensor is probably damaged and needs replacing. Have a workshop do this
- 5Have a workshop check whether the engine control module needs a software update, 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.