2005 3.0i Oxygen Sensors (Upstream or Downstream?)

[ugocardone]

Hello everyone. I am getting codes 2883 and 29A3 when the car gets hot. MPG around 18... I did replace upstream sensors not too long ago, so I'm guessing these codes refer to downstream. Still, I do not completely trust the aftermarket sensors I used when I replaced the upstream oxygen sensors. Anyone know more about these codes? Thanks!

 

[colb]

That pointing the error at the pre cat sensor Bank 2, no signal, if you can view it in diagnostics live data to see what its doing, if its working it should produce a nice wave form graph as it ranges up and down voltages, if its static or slow then likely its duff. You could swap the pre cat sensors over and see if the fault changes to Bank 1 to confirm its duff. As with all sensors oem parts are best to use, shop around for Bosch or Seimens brands. Just check the wiring connectors before condeming the sensor. Bet your fuel trims are high hence the low mpg you are seeing all down to the sensor not performing as it should.