Hisurfernmi

I ended up replacing one of the ground wires (located on the left side of the engine). I then drove another 800+ miles on it until today with no errors. Today I got the P260F code again after getting the wrenches + SSN message. I was able to clear the error messages by restarting the car and was able to drive it home. Looks like I may need to look at the PCM now.

2010 Ford Fusion Hybrid w/152k miles I've looked through the forum, but not finding the same combination of errors I'm having. Maybe someone could help. About 5 months ago I started getting random warnings in regards to the Advanctrac w/Wrench. At first I could restart the car and it would clear the warning. The warning got more persistent and wouldn't go away immediately after a restart, but for a good 4 months it would randomly pop up, then disappear for some time. Never consistent. Maybe got the error a total of 4 times. OBD scan of the DTCs would show nothing. A month ago I got the Advanctrac warning and soon followed by the Stop Safely Now warning (red triangle), and then a bunch of more warnings (Check High Voltage Charging, Engine Overtemp, Low Fuel (tank wasn't low), etc). Got the car towed to a dealership and they determined it was the 12V battery (old Battery was only 18 months old). Swapped it and tested. Worked fine for them. Car was no longer throwing warnings. I picked up the car and got about 5 miles before it threw the Advanctrac Warning again. This time it didn't go into SSN so I drove it back to the dealership. They tested it for 2 days and couldn't get it to error. On the third day it left the service manager stranded with the SSN error. They wanted $1600 to do a full check on the electrical connections. I balked and had the car towed back to my house. I checked the ground wires and cleaned one end with a wire wheel. Cleaned the Mass Air Flow sensor (that was replaced around 100k miles). Cleaned the Throttle body (I've replaced/cleaned this multiple times over the years). Car started and ran beautifully. Checked in Forscan for any codes and nothing. Ran car through various tests and it worked like a charm. Also reset the high voltage battery life to year 1 and the Hybrid system started functioning like it hadn't done in years. Reset the trip counter and started logging miles. Today I had gotten to just over 400 miles driven since the last SSN message. Felt really confident I had fixed the issue. Then as I was driving through a parking lot I went over a mild bump. Boom the Advanctrac Warning came up.... then 30 feet later I got the SSN message. Now I have my OBD tool and voltmeter with me to check some items. 12V Battery came back with expected values, OBD tool would NOT load. OBD tool not working has been a problem before when the SSN message came up and starting flashing the random warnings. Checked wired connections to battery, poked around to check fuses and any cables I could see. Kept trying to restart car, but to no avail. Got Advanctrac warning w/Wrench, then immediately the SSN red triangle. So I started the process to get my car towed back to my house. 30 minutes into my wait for a tow truck I decide to try the car again. All the warnings DO NOT come up. The car appears to be functioning again. I don't believe it, so I restart a handful of times. Still good. Plug my OBD tool in and it works. I check the codes and it has P260F - Evaporative System Monitoring Processor. First time I've seen this error code. Clear the code and it stays off. Drive the car around the parking lot to see if it would flake out again. It does not. Make the decision to just drive the car home (I was about 15 minutes away). Car drives home with no issue. So, now I'm back home with a car that works, but have no confidence in. Any ideas what I should check? The P260F code leads to checking/replacing the PCM, but this is the first time I've seen that error. I'm not getting any other codes that often relate to the PCM being an issue. I also can't find a video or good information on where the PCM is on the 2010 Hybrid. Car seems to have an Electrical gremlin somewhere, but I haven't found any issues in all my poking and prodding around the engine bay. I'm not finding much help on the internet of the Advanctrac warning followed by Stop Safely now other than checking the ground wires and swapping the 12V battery. Thanks for reading!