VOLVO
CEM-3F03 - Shift lock signal. Signal missing. Intermittent fault
System
Central Electronic Module (CEM)
Volvo models this fault code applies to
This fault code has different meanings depending on model, model year or engine. Select the meaning that applies to your car.
Applies to the following models:
5 modelsS60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
What does this fault code mean?
The CEM registers that the shift lock output signal is missing. The fault is intermittent, so it may have occurred before without being active now. This applies only to cars with automatic transmission. The starter motor may then fail to work.
Possible causes
- A break in the shift lock output signal
What you can do
- 1This applies only to cars with automatic transmission. Switch the ignition off, and check that the gear selector is in the correct position when you start
- 2Check that the connectors in the shift lock circuit are seated and not corroded
- 3Use a multimeter to check that the shift lock signal wire has no break. The fault may be intermittent
- 4After the work, clear the code and check that the starter motor works
Symptoms you may notice1
- The starter motor does not turn
General guidance for car owners. Diagnosis on the car can point to a different cause.