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P0154 Diagnostic Trouble Code Discussion for August 2012

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
2005 Mazda MPV ES 3.0L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire, Poor Fuel Economy, MIL Lamp on VIN: JM3LW28A65
P0154: Heated Oxygen Sensor (Bank 2 Sensor 1) No Activity Detected. initally i thought this was going to be fairly painless vacuum leak, MAF, so on and so forth and it may be but im having trouble finding a place to start because all the HO2S voltage is at 0.01 all four of them but at the same time STFT is at -128. so why woul...
August 02, 2012
1999 Chevrolet K1500 Suburban 5.7L p0154 VIN: 3GNFK16R7X
P0154: Heated Oxygen Sensor (Bank 2 Sensor 1) Insufficient Activity. ... of codes, found that it needed a pcm. Replaced pcm came back with code p0154 low activity b2 s1. Replaced that oxygen sensor, no fix, wires are all good going from pcm to oxygen sensor, pcm good, oxygen sensor is new, it stays right around 440 mv and dosnt...
August 08, 2012