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P2A00 Diagnostic Trouble Code Discussion for July 2009

Air Fuel Sensor (Bank 1 Sensor 1) Circuit Range / Performance

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Trouble Ticket Help Requests for DTC P2A00
Help Request Posted
2006 Nissan Frontier SE 4.0L MIL Lamp on VIN: 1N6AD07W96
P2A00: Air Fuel Sensor (Bank 1 Sensor 1) Circuit Range / Performance. this truck has a mixture problem on bank 1. truck runs good otherwize. readings from upstream afs sensors are as follows b1s1 avg volts = 1.2-1.1 b2s1 1.49. spec is about 1.5. this does not change at high idle either. code will set after aprox 2 drive cycles. ...
July 22, 2009