Diagnostic trouble code (DTC) information REM-8F10

Condition 

Fig 1: Identifying Position Sensor For Headlamp

Courtesy of VOLVO CARS OF NORTH AMERICA.

The rear electronic module (REM) checks the signal from the rear position sensor.

The diagnostic trouble code (DTC) is stored if the rear electronic module (REM) registers a faulty signal from the position sensor.

The diagnostic trouble code (DTC) can be diagnosed at key position II.

Substitute Value 

• The shortest headlamp range will be used.

Possible Source 

• Short-circuit to supply voltage in the signal cable
• Defective position sensor.

Fault symptom[s] 

• Automatic headlamp range control is not functioning.