Circuit Description

Refer to DTC P0130 OXYGEN SENSOR CIRCUIT (BANK 1 SENSOR 1) DTC P0150 OXYGEN SENSOR CIRCUIT (BANK 2 SENSOR 1) DTC P2195 OXYGEN SENSOR SIGNAL STUCK LEAN (BANK 1 SENSOR 1) DTC P2196 OXYGEN SENSOR SIGNAL STUCK RICH (BANK 1 SENSOR 1) DTC P2197 OXYGEN SENSOR SIGNAL STUCK LEAN (BANK 2 SENSOR 1) DTC P2198 OXYGEN SENSOR SIGNAL STUCK RICH (BANK 2 SENSOR 1) .

Fig 1: DTC P0134, P0154 Trouble Detection Table

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

• Bank 1 refers to bank that includes cylinder No. 1.
• Bank 2 refers to bank that does not includes cylinder No. 1.
• Sensor 1 refers to the sensor closer to the engine assembly.
• After confirming DTC P0134 and P0154, check the output voltage of the heated oxygen sensor in the "DIAGNOSIS/ENHANCE OBD II/DATA LIST/ALL" using the OBD II scan tool or the hand-held tester.

  If output voltage of the heated oxygen sensor is always less than 0.1V, heated oxygen sensor circuit may be open or short.