Diagnostic trouble code (DTC) information REM-4A48

Condition 

Fig 1: Identifying Fuel Level Sensor

Courtesy of VOLVO CARS OF NORTH AMERICA.

The rear electronic module (REM) checks the signal from the fuel level sensor for gas.

The diagnostic trouble code (DTC) is stored if the rear electronic module (REM) registers that the signal is too high.

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

Substitute Value 

• The fuel level is set to zero.

Possible Source 

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

Fault symptom[s] 

• The trip computer displays an empty fuel tank too early
• The fuel gauge indicates zero even though there is fuel in the tank
• The gas level gauge does not function
• Automatic headlamp range control is not functioning.