Toyota Corolla (E120): Oxygen sensor circuit malfunction

Dtc p0136 oxygen sensor circuit malfunction (bank 1 sensor 2)

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Adjustment
1. Inspect park/neutral position switch assy  apply the parking brake and turn the ignition switch on.  depress the brake pedal and check that the engine starts only when the shift lever is set in n or p position and it does not start in the other position.  check that th ...

Inspection
1. Windshield wiper switch assy Continuity check  check the continuity of each terminal of the connector. Front wiper switch Standard: Front washer switch Standard: W/o intermittent time adjust: intermittent operation check  connect the voltmeter (+) te ...

Circuit description
When the ignition switch is turned on, battery positive voltage is applied to the coilwhich closes the contacts of the efi main relay (marked: efi) and supplies power to terminal +b of the ecm. This signal causes current to flow to the coil, closing the contacts of the efi relay and supplyin ...