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Home >> Mazda >> 2019 >> CX-5 Signature, 2.2L Eng VIN 2 >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (VIN 2) >> Air Fuel Ratio (A/F) Sensor Removal/Installation >> Operation After Replacing A/F Sensor

Operation After Replacing A/F Sensor

  1. If the A/F sensor is replaced, perform the following procedure.
Step Action Refer to
1 Perform the A/F sensor data reset procedure. (See AIR FUEL RATIO (A/F) 
SENSOR DATA RESET.)
2 Switch the ignition off. -
3 Wait for 20 s. -
4 Switch the ignition ON (engine off). -
5 Perform the KOEO self test procedure. (See KOEO/KOER SELF TEST .)
6 Start the engine. -
7 Verify that the check engine light does not illuminate. -
8 Perform the KOER self test procedure. (See KOEO/KOER SELF TEST .)
9 Perform the compulsory diesel particulate filter regeneration procedure. (See COMPULSORY DIESEL PARTICULATE FILTER REGENERATION .)
10 Perform the following procedure.
CAUTION:
  • If the M-MDS is connected to the DLC-2, disconnect the M-MDS. Otherwise, it could adversely affect safety when performing the procedure.
  1. Vehicle is traveling at a speed of 50 km/h {31 mph} or more.
  2. Release the accelerator pedal at a vehicle speed of 50 km/h {31 mph} or more and maintain this condition for 6 s.
 -
11 Verify that the PID "O2S11_CAL" value is other than 0. (See ON-BOARD DIAGNOSTIC TEST .)
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