Contour Enthusiasts Group Archives Forums General Troubleshooting I think i got a few things wrong

well i went by autozone and got them to run a codes check on my car. well heres what i got 177(O2 sensor indicates rich, Bank 2), 332(EGR valve opening not detected)( just got EGR replaced), 542(Fuel pump circuit open, ECA to pump motor ground)(might be what caused my stereo, dome ligthts and clock to stop workin), and 543 (fuel pump circuit open, battery to ECA).

Now i am not very knowledgable with cars so has anyone had any of these problems and may know how to fix em. cuz i have no money for a mechanic.

Replaced the EGR valve? Did you clean out the EGR passages?
Could also be the DPFE or EVR at fault if the passages are clear.

One Bank rich is unusual. A faulty fuel injector may cause it but perhaps they are both rich and the back bank is reading lean (thus causing it to look normal).

Fuel pressure, MAF, ECT, IMRC, nor O2 sensors can cause rich readings.

Power problems often arise from corrosion under the AUX fuse and relay box by the battery.