VOLVO
ECM-0651 - Reference voltage B. Faulty signal
System
Motorsteuergerät (ECM)
Volvo-Modelle, für die dieser Fehlercode gilt
Gilt für folgende Modelle:
3 ModelleC30 (2007–2013), S40 (2004–2013), V50 (2004–2013)
Modelle nach Baujahr und Motor anzeigen (3)
Was bedeutet der Fehlercode?
The ECM monitors reference voltage B, which goes to several components, and sets the code when that voltage is unstable. The fault may lie in a component's signal wire, or in the control module's own supply of the reference voltage. The malfunction indicator lamp lights.
Mögliche Ursachen
- Component signal wire shorted to battery voltage or reference voltage
- Open circuit in the signal wire, or a short to earth in it
- Internal fault in the control module's supply of reference voltage
Was Sie tun können
- 1Check the connectors to the affected components for looseness, contact resistance and oxidation
- 2Check the component's signal wire for breaks and chafing
- 3With the ignition off, use a multimeter to check that the signal wire has no short to earth or to voltage
- 4If this does not remedy the fault, a workshop should decide whether the engine control module needs replacing
Symptome, die Sie bemerken können1
- Malfunction indicator lamp is on
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.