5th O2 Sensor this year!!

[SigmaPi]

If that is true about the O2 sensors being sensitive to fuel mixtures, why has it not affected my Lexus or 4Runner in the same manner? Porsche is obviously a superior product right?

[MNBoxster]

Originally Posted by SigmaPi

If that is true about the O2 sensors being sensitive to fuel mixtures, why has it not affected my Lexus or 4Runner in the same manner? Porsche is obviously a superior product right?

Hi,

Not at all. It could be construed that Porsche is inferior. It's not the O² Sensors, but the software limits of the DME. It does not have any Maps for the readings the sensor is sending it - the values lie outside the defined operating parameters.

Your other cars may well be affected, just not to the same degree. The ECU has an adequate Map to cope with the circumstances and so doesn't foul the O² sensor or send a code...

Happy Motoring!... Jim'99