Diagnostic Trouble Code (DTC) Information CEM-1A42

Condition 

Fig 1: Identifying Central Electronic Module (CEM)

Courtesy of VOLVO CARS CORPORATION

The central electronic module (CEM) checks the real time clock.

The diagnostic trouble code (DTC) is stored if the control module registers that the real time clock has stopped.

The diagnostic trouble code (DTC) can be diagnosed when the ignition has been switched on for at least one minute.

Substitute Value 

• None.

Possible Source 

• Internal fault in the control module.

Fault symptom[s] 

• The clock in the information module is not working.