Was bedeutet der Fehlercode CEM-3F90?

Diagnose und Fehlercodedefinition für CEM-3F90 (Volvo S60 (2001–2009), Volvo S80 (1999–2006), Volvo V70 (2000–2008)). Steuergerätereparatur bei OBD Tuning.

VOLVO

CEM-3F90 - Fuel pump relay. Open-circuit or short-circuit to ground

System

Zentralelektronik (CEM)

Volvo-Modelle, für die dieser Fehlercode gilt

Gilt für folgende Modelle:

5 Modelle

S60 (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 CEM checks and activates the fuel pump relay after the immobilizer has approved its check. The relay sits inside the CEM. The code is set when the voltage on the fuel pump output is too low. The engine does not start.

Mögliche Ursachen

A damaged power supply fuse
An open circuit in the supply wire between the engine bay fuse box and the CEM
The supply wire between the CEM and the fuel pump is shorted to ground

Was Sie tun können

1Check the fuse for the fuel pump power supply in the engine bay. If it has blown, replace it once
2Use a multimeter to check that the wire between the CEM and the fuel pump has no break or short to ground
3Warning: do not connect an external power source directly to the fuel pump without first disconnecting the CEM connector, since the CEM can be damaged
4After the work, clear the code and check that the engine starts

Symptome, die Sie bemerken können1

The engine does not start

Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.