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Anyone else experience this code before U0155? F-Can Malfunction, no power to the dashboard and car cranks but won’t start.

 
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I am currently experiencing this code. But not these symptoms. My dash cluster on my 2011 HOnda civic lx sedan randomly go dark and come back on when I smack the dash......its been happening for maybe 8 months now. More recently, my back driver side window stopped going down, the climate control lights on my dash are halfway out and napa said a fuse I was concerned was blown wasnt blown but was getting too much...ampage...voltage....whatever. The other day the car randomly started suddenly overheating but it was weird bc when I tuned the car off and turned it back on immediately, the temp guage read normal until I put it in drive....it did this for several hours and I ended up having it towed home bc I was concerned about driving it if I couldnt go one car length without the temp gauge shooting up......the next day? I drove it around trying to get it to overheat and throw a code and it just didnt. Changed the thermostat but then it throws and o2 sensor code for the downstream o2 sensor. I thought maybe I got coolant on the sensor when I changed the thermostat bc I have never changed a thermostat before but that cant be because its way too far away from where I was working to have gotten coolant in it. I strongly believe I am having an electrical issue that is just getting worse because I havent addressed it bc I cant afford a mechanic and I dont know where or how to start diagnsing....but I believe the code youre getting says that It is canbus/wiring related. Mine continuously gives me that code for the past couple weeks. Theres a wiring harness under the dash...but I dont know where lol. I wont be too much help solving your problem for you but perhaps we could troubleshoot together......