Diagnostic trouble code (DTC) information REM-4F43

Condition 

Fig 1: Identifying Parking Sensor

Courtesy of VOLVO CARS OF NORTH AMERICA.

The rear electronic module (REM) communicates with the parking assistance module (PAM) which checks the signal from parking sensor 2.

The diagnostic trouble code (DTC) is stored if the parking assistance module (PAM) registers a faulty signal from the parking sensor (2).

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

Substitute Value 

• None.

Possible Source 

• Short-circuit to ground or supply voltage in the signal cable between the parking assistance module (PAM) and parking sensor 2
• Short-circuit to ground in the power supply cable between the parking assistance module (PAM) and parking sensor 2
• Short-circuit to supply voltage in the ground lead between the parking assistance module (PAM) and parking sensor 2.

Fault symptom[s] 

• The parking assistance system does not operate
• Message in the display.