Two codes are about O2 sensor heater circuits. Two codes are for running too lean (which tends to indicate a vacuum leak.)
The O2 code? I'd give it a fair chance. First, I'd make sure the thing is plugged in. It could have been overlooked or wasn't clipped on well and came off.So what are the chances that if I replace the O2 sensor that will fix it... I've been on the phone off and on with the dealership all day and there's no way it's their fault, they're not going to pay to replace it so I'm just going to go ahead and avoid the hassle and buy the part.