Toyota Corolla Cross: M20a-fxs (engine Control)

 A/F (O2) Sensor Signal Biased/Stuck Lean Bank 1 Sensor 2 Circuit Current Above Threshold (P227019,P227118)

DESCRIPTION Refer to DTC P003612. Click here HINT: Although the DTC title say O2 sensor, these DTCs relate to the air fuel ratio sensor (sensor 2). DTC No. Detection Item DTC Detection Condition Trouble Area MIL Note P227019 A/F (O2) Sensor Signal Biased/Stuck Lea

 HO2S Heater Control Circuit Bank 1 Sensor 2 Circuit Short to Battery (P003612,P003613,P102A9E)

DESCRIPTION The air fuel ratio sensor (sensor 2) generates current that corresponds to the actual air fuel ratio. This sensor current is used to provide the ECM with feedback so that it can control the air fuel ratio. The ECM determines the deviation from the stoichiometric air fuel ratio level, and