Q&A

I feel like I have been jumping through hoops for repair costs. I have replaced the EGR valve and sensor, replaced front brakes, emergency brake cables, presently waiting on a vacuum adaptor... mechanic told me I needed to complete a drive cycle. When I did, check engine light came on again, showing P1131 (O2 sensor) and P0125 (thermostat or coolant problems). I thought it only needed to pass 4 of 5 codes, but don't know which ones & how to fix so I can just get an inspection sticker!! Thanks