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P1151 Diagnostic Trouble Code Discussion for May 2009

Electronic Throttle System Sub Accelerator Position Sensor 2 Circuit Malfunction

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Trouble Ticket Help Requests for DTC P1151
Help Request Posted
2000 Mazda B4000 SE 4.0L MIL Lamp on VIN: 4F4ZR17XXY
P1151: Heated Oxygen Sensor (Bank 2 Sensor 1) Indicates A/F Ratio Too Lean. got a strange one here. code p1151 says lack of switching with o2 sensor 1 bank 2 indicating rich. when testing o2 seems to switch fine. long term fuel trims indicate -8% on bank1 -11% on bank 2. can't find any vacuum leaks or extra fuel getting in anywhere. o...
May 12, 2009