Fault-tracing information

Condition 

Fig 1: Identifying LPG Control Module, Oxygen Sensor, And Indicator Lamp

Courtesy of VOLVO CARS OF NORTH AMERICA.

The LPG indicator lamp is controlled by the LPG control module. The lamp does not light until the conditions for gas operation are met and gas power is engaged

No diagnostic trouble codes (DTCs) stored.

Substitute Value 

None.

Possible Source 

• Contact resistance in the terminals
• Open-circuit or short-circuit to supply voltage in the signal cable
• Defective bulb
• Defective combined instrument panel.

Fault symptom[s] 

• The LPG indicator lamp does not light.