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P0154 Diagnostic Trouble Code Discussion for October 2010

Heated Oxygen Sensor (Bank 2 Sensor 1) Signal Remains At Center

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Trouble Ticket Help Requests for DTC P0154
Help Request Posted
2000 Honda Passport EX 3.2L Excessive Emissions VIN: 4S6CK58W7Y
P0154: Heated Oxygen Sensor (Bank 2 Sensor 1) Insufficient Activity. Runs great in open loop, once it goes into closed loop it starts loading up on one bank,then it jumps back to open loop and runs fine. tested 02s and looked good, checked temp and air sensors, looked good. Change to Denso plugs and runs better but still runs b...
October 08, 2010