Caution / Notice / Hint

HINT: 

• Refer to "Data List / Active Test" [A/F (O2) Sensor Heater Duty Ratio B1S1 and A/F (O2) Sensor Heater Duty Ratio B2S1].

  Refer to DATA LIST / ACTIVE TEST [12/2019 - 09/2020] , or refer to DATA LIST / ACTIVE TEST [09/2020 - 10/2022]

• Bank 1 refers to the bank that includes the No. 1 cylinder*.

  *: The No. 1 cylinder is the cylinder which is farthest from the transaxle.

• Bank 2 refers to the bank that does not include the No. 1 cylinder.
• Sensor 1 refers to the sensor closest to the engine assembly.
• Sensor 2 refers to the sensor farthest away from the engine assembly.
• Change the fuel injection volume using the Control the Injection Volume for A/F Sensor function provided in the Active Test and monitor the air fuel ratio sensor output voltage (Refer to CAUTION / NOTICE / HINT ). If the sensor output voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning.
• Read Freeze Frame Data using the GTS. The ECM records vehicle and driving condition information as Freeze Frame Data the moment a DTC is stored. When troubleshooting, Freeze Frame Data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.