Checking The Flame Sensor

Check that the flame sensor is not clogged with soot.

Remedy as necessary.

Other information: 

• To access or replace the flame sensor, see OVERHEAT PROTECTION THERMOSTAT / FLAME SENSOR / ENGINE COOLANT TEMPERATURE SENSOR, REPLACING .

Fig 1: Identifying Flame Sensor

Courtesy of VOLVO CARS CORPORATION

Was a fault detected? 

• YES 

  Refer to VERIFICATION 

• NO 

  Refer to CHECKING COMPONENTS AND WIRING