check engine light o2 sensor ???

[fsflip13]

my check engine light keeps coming on and when i check the codes they read the rear 02 sensor code and the egrc/solenoid code

does anyone think that putting a new rear o2 sensor in would stop these codes

has anyone had this problem and what was the outcome

it doesnt make sense to me because the ecu is shooting both of those codes so i dont really know if the o2 sensor is what is causing the problem

any help appreciated

[1991S13]

Chances are, if the ECU is throwing a rear o2 sensor code then yeah it needs to be replaced. Replace it, and then see what the ECU is telling you.

[fsflip13]

i wonder why the ecu was reading egrc/solenoid though?