What does fault code UEM-000C mean?

Diagnostic fault code details for UEM-000C (Volvo S60 (2001–2009), Volvo S80 (1999–2006), Volvo V70 (2000–2008)). Repair service at OBD Tuning.

VOLVO

UEM-000C - Mass movement sensor. Signal too high

System

Upper Electronic Module (UEM)

Volvo models this fault code applies to

Applies to the following models:

5 models

S60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)

Show models by year and engine (5)

What does this fault code mean?

The upper electronic module (UEM) reports a high signal level on the movement sensor's supply wire while the alarm is off and the ignition is off. The code is set when this happens. The cause is that the supply cable to the sensor is short-circuited to voltage.

Possible causes

The sensor's voltage supply is short-circuited to voltage

What you can do

1Read off the code, clear it and check whether it returns.
2Look for pinched areas, chafed spots and loose connectors on the sensor's wire.
3With a multimeter you can check that the supply cable to the sensor has no contact with battery voltage.
4Check the connectors at the sensor and at the upper electronic module for corrosion.
5If the fault remains, have a workshop check the wire and the sensor.

Symptoms you may notice1

The alarm does not respond to the movement sensor

General guidance for car owners. Diagnosis on the car can point to a different cause.