VOLVO
CEM-8FA3 - Relay, signal horn. No signal. Intermittent fault
System
Zentralelektronik (CEM)
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 (5)
Was bedeutet der Fehlercode?
The fault is intermittent: the signal to the horn relay coil was missing or too low on an earlier occasion, but it is no longer present. The horn may then stop working, and the cause may be oxidation in the relay socket, a relay that is loose or missing, or a faulty relay.
Mögliche Ursachen
- Oxidation in the relay socket contacts
- The relay is loose or missing
- Faulty relay, such as an open or short circuit to ground in the coil
Was Sie tun können
- 1Clear the code and check whether it returns; an intermittent fault can be a temporary disturbance
- 2Check that the horn relay sits firmly in its socket and is not loose
- 3Check that the contacts in the relay socket are clean and free of oxidation
- 4Test the horn with the ignition on; if it only works now and then, the fault has been intermittent
- 5If the fault returns, have a workshop check the relay's driver circuit and replace the relay if needed
Symptome, die Sie bemerken können1
- The horn does not work
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.