Diagnostic Trouble Code (DTC) Information CEM-7A05

Condition 

Fig 1: Identifying YES Button

Courtesy of VOLVO CARS OF NORTH AMERICA.

The central electronic module (CEM) checks the signal from the YES button.

The diagnostic trouble code (DTC) is stored if the central electronic module (CEM) registers that the YES button has been active for more than 1 minute.

The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on.

Substitute Value 

• None.

Possible Source 

• The YES button is jammed in the pressed in position
• Damaged YES button.

Fault symptom[s] 

• The phone buttons on the steering wheel do not work.