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P0140 Diagnostic Trouble Code Discussion for August 2013

Heated Oxygen Sensor (Bank 1 Sensor 2) Insufficient Activity

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Trouble Ticket Help Requests for DTC P0140
Help Request Posted
2001 Nissan Quest GXE 3.3L MIL Lamp on VIN: 4N2ZN15T81
P0140: Heated Oxygen Sensor (Bank 1 Sensor 2) Insufficient Activity Detected. Customer came to me wanting AC repaired. Tested and find no Freon and no leaks. Then tested radiator and find its temp too high. Advised to do radiator first and other needed problems fixed. Mil is own so when tested find knock sensor code and O2 code. She sai...
August 19, 2013