Diagnostic Trouble Code (DTC) Information CEM-8D04 (2009, 2010, 2011)

Condition 

Fig 1: Identifying High Level Stop Lamps

Courtesy of VOLVO CARS OF NORTH AMERICA.

The diagnostic trouble code (DTC) is stored if the central electronic module (CEM) registers that the signal to the high level stop lamp is too low.

The DTC can be diagnosed when the key is removed, in ignition position 0, I or II and with the stop lamp activated.

Substitute Value 

• None.

Possible Source 

• Short-circuit to ground in the signal cable to the high level stop lamp.

Fault symptom[s] 

• The stop lamp does not light when the brake pedal is depressed.