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P0138 Diagnostic Trouble Code Discussion for June 2011

Heated Oxygen Sensor (Bank 1 Sensor 2) Circuit High Voltage

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Trouble Ticket Help Requests for DTC P0138
Help Request Posted
2005 Toyota Sienna LE 3.3L MIL Lamp on VIN: 5TDZA23CX5
P0138: Heated Oxygen Sensor (Bank 1 Sensor 2) Circuit High Voltage. ... wier problem when reading scan data bank 2 sensor 2 & bank 1 sensor 2 on a cold motor is supposed to be about 0v, but my b1 s2 read voltage of about 1.6v to 3.6v, but if you leave key on for about ten minutes engine off, voltage will gradually go down ...
June 13, 2011