Diagnostic trouble code (DTC) information CEM-8E01

Condition 

Fig 1: Identifying Back-Up (Reversing) Lamp Switch

Courtesy of VOLVO CARS OF NORTH AMERICA.

The central electronic module (CEM) checks the back-up (reversing) lamp switch.

The diagnostic trouble code (DTC) is stored if the central electronic module (CEM) registers that the signal in the circuit for the back-up (reversing) lamp switch is too low when gears 1 to 5 are selected and vehicle speed is above 80 km/h.

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

Substitute Value 

• None.

Possible Source 

• Damaged back-up (reversing) lamp switch
• Short-circuit to ground in the cable from the back-up (reversing) lamp switch.

Fault symptom[s] 

• The back-up (reversing) lamp is constantly lit.