VOLVO
CEM-4A37 - Fuel level sensor. Short-circuit to supply voltage or open-circuit
Układ
Centralny moduł elektroniczny (CEM)
Modele Volvo, których dotyczy ten kod błędu
Dotyczy następujących modeli:
5 modeliS60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
Co oznacza ten kod błędu?
The CEM keeps watching the pump side sensor in the tank. The fault is set if the connection to the sensor has a break, or if the sensor is shorted to supply voltage. The fuel level is then set to zero.
Możliwe przyczyny
- An open circuit in the wire to the pump side sensor
- The sensor on the pump side is shorted to supply voltage
Co możesz zrobić
- 1With the ignition off, unplug CEM connector D. Check that the connectors are seated and not corroded
- 2Use a multimeter to check that the signal wire to the sensor has no break or short to supply voltage
- 3If code CEM-4A33 is also stored, use a multimeter to check that the ground wire has no break
- 4If the wires are intact, have a workshop replace the sensor, since it sits in the tank
- 5After the work, clear the code and check that the fuel gauge shows the correct level
Objawy, które możesz zauważyć2
- The trip computer shows an empty tank too early
- The fuel gauge reads zero although the tank holds fuel
Na co może wpływać usterka1
- The fuel level is set to zero
Ogólne wskazówki dla właścicieli. Diagnostyka na samochodzie może wskazać inną przyczynę.