FixVault

Air Fuel Ratio (A/F) Sensor Removal/Installation: Notes

Special Service Tool (SST) 

49 L018 001
O2 sensor wrench
G13119130Courtesy of MAZDA MOTORS CORP.

Replacement Part 

Band
Quantity: 1
Location of use: A/F sensor
Clip band
Quantity: 1
Location of use: A/F sensor
WARNING:
  • A hot engine and exhaust system can cause severe burns. Turn off the engine and wait until they are cool before removing the exhaust system.
CAUTION:
  • Do not allow flammable objects such as the taping for bundling a wiring harness to come into contact with the catalytic converter.
NOTE:
  • If the A/F sensor is replaced, perform the "Operation After Replacing A/F Sensor" procedure.

    (See OPERATION AFTER REPLACING A/F SENSOR .)

  • If penetrant lubricating spray penetrates the airflow hole of the A/F sensor, it could cause interference with the A/F sensor function.
  • When removing the A/F sensor, wrap a rag around the lower position so that penetrant lubricating spray does not get sprayed into the airflow hole.
G13119131Courtesy of MAZDA MOTORS CORP.