[zenocchio]

I suspect that my O2 sensors or *** are faulty. I have a stock 535xi with JB4 and DCI.
The max mileage that I'm getting is 7.8km/l about 18MPG on highway or 14.8MPG mix.

I changed the injectors less than 5000km ago as a couple were bad.

The O2 sensors read as follow:
Bank 1 pre *** 2.1V post *** O.74V
Bank 2 pre *** 2.1V post *** oscillating between 0.1 and 0.9

Time for O2 sensors? What is the normal behaviour?

[zenocchio]

pic attached

[Mr. T]

I actually have an 02 for bank 2 precat sitting around if you'd like to buy it. Is the car throwing any codes, are you able to hit boost?

[zenocchio]

Originally Posted by Mr. T

I actually have an 02 for bank 2 precat sitting around if you'd like to buy it. Is the car throwing any codes, are you able to hit boost?

I get often 29F4 and 29F5 codes
boost is ok

[zenocchio]

Any insight?