Diagnostic Trouble Code Information

Condition 

Fig 1: Fuel Pump, Water Pump, And Heater Fan Power Supply Diagram

Courtesy of VOLVO CARS CORPORATION

If the power supply from the control unit to the fuel pump, water pump and heater fan is short-circuited to voltage supply, the control unit will interpret this as a fault and diagnostic trouble code CEM-5F42 will be set.

Substitute Value 

• None.

Possible Source 

• Power supply wire short-circuited to voltage supply.

Fault symptom[s] 

• Nothing.