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P1173 Diagnostic Trouble Code Discussion for January 2005

Electronic Throttle System Rationality

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Trouble Ticket Help Requests for DTC P1173
Help Request Posted
2001 Mazda MPV DX 2.5L Excessive Emissions VIN: JM3LW28Y11
P1173: Heated Oxygen Sensor (Bank 2 Sensor 1) Circuit Malfunction. My question is, is there a common problem that will cause both #1 O2 sensors to read bad at the same time? I have seen this on Fords and have fixed vaccum lines to repair this problem without replacing O2 sensors. This vehicle has never had a tune-up. That is ...
January 12, 2005
1998 Mazda Millenia 2.5L Excessive Emissions, Hesitation VIN: JM1TA221W1
P1173: Heated Oxygen Sensor (Bank 2 Sensor 1) Circuit Malfunction. Dear techs, especially Mazda experts: This car came in with the complaints that the C.E. light is on and it bogs on acceleration. The codes for 0/2 inversion simply mean they are showing rich. The car runs pig rich, as you can see in the CO readings, but it i...
January 15, 2005