trouble codes 44 and 46

[PATCHEZ]

Wanted to ask what you guys think.
I have codes 44-Rear Fuel Supply System<!--mstheme--> and 46-Rear Fuel Metering together.Im thinking bad O2 sensor or O2 circut is causing both codes.
Im going test the circut voltage and probably replace O2 anyways since who knows if they have ever been changed.Thought anyone?<!--mstheme-->

 

[pgilliam1]

From what I've read here, you can disconnect the O2 sensor, reset the ECU (pull the clock fuse and replace it), restart the car and you should not get any codes because the ECU will compensate for the missing sensor. Then reconnect the sensor and if the codes return you have isolated it to the sensor.

 

[Daedalus]

If you disconnect the O2 sensor you'll definitely get a code. I would pull the fuse to clear the code, and see if it comes back without changing anything else. Without a code 45 I agree O2 sensor is a good suspect, but you might want to check your fuel pressure just in case.