The rear O2 sensors are there to monitor the performance of the catalytic converters. Unfortunately as with any modern EFI engine, when sensors play up it can cause the engine to use more fuel.
: I am getting 14-15ltr/100km on my VE V6 SIDI 3.6L LLT, is this because my rear o2 sensors are not functioning,also when I use the dash command it says the car is running way to rich as normal.? What do the rear o2 sensors do? Do they have anything to do
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