Diagnostic trouble code (DTC) information REM-4A40

Condition 

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

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
• Open-circuit 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 work.