Circuit Description

Code P0130 is set when bank No. 1, sensor No. 1 voltage remains at .4-.55 volts during idle. Code P0150 is set when bank No. 2, sensor No. 1 voltage remains at .4-.55 volts once engine is at normal operating temperature. Possible causes are:

• Heated oxygen sensor malfunction.
• Fuel trim malfunction.

Fig 1: CODE P0130 & P0150 - Flow Chart (1 Of 2) Heated O2 Sensor Circuit Malfunction

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: CODE P0130 & P0150 - Flow Chart (2 Of 2) Heated O2 Sensor Circuit Malfunction

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002