Engine safe mode? Limp mode?

Well I hope this helps out other people. Thanks for the replies.

Engine Mechanical problem 6 cyl Four Wheel Drive Automatic 88000 miles

Hello, recently my ford explorer 2005 would not start. I used jump box and vehicle started up. I turned on defroster waited 10 min and went in house. Came back 10 min later vehicle was off. Bought new battery I installed and now have message engine fail safe mode and vehicle wont start. Can anyone help? My only vehicle.

Last Thursday I was driving home from work in a 35 mph speed limit zone, and I had to come to a stop because a truck thought he wasn’t going to make it under a railroad bridge. About thirty seconds later, he starts driving and I look down at my dash, and the “Engine Fail safe Mode” message displayed, and the car stalled. I was able to start it up and drive it home without further problems. Took it up the highway later that day, and no issues. Took it to a mechanic over the weekend and they couldn’t figure it out because it didn’t throw any codes. Drove it home from the mechanic with no issues, and to work this morning with no issues. Driving home today, down that same 35 mph speed limit road, “engine Fail safe Mode” displayed again, and the orange wrench light lit up like it did last week, but this time it didn’t stall, not even after coming to a complete stop in my driveway. Left the car running for a couple minutes and it still didn’t stall but the light was still on. I had a similar issue with it about five years ago where the message kept popping up very frequently and the truck would stall while slowing down to take a turn; it turned out to be the throttle sensor was bad, so we replaced it and all was fine until now. The only thing is the “check engine” light, or in my case, the “service engine soon” light didn’t come on, which explains why it didn’t throw a code. I can’t remember if that happened five years ago or not. Not sure what it is. Maybe I need a new sensor, maybe a new throttle body, not sure. The mechanic did say they cleaned a couple of the spark plugs, and said it could use a tuneup, but they said it wasn’t urgently needed. I don’t know if that’s causing this or what is. Hopefully I explained this well enough. Any help ASAP would be greatly appreciated, so I can either fix it myself or take it back to my mechanic to get it fixed. Thank you in advance for any assistance.

I included a picture of my dash with all the lights that came on. As you can see, no “check engine” or “service engine soon” light is on.

The first time it went into fail I was going 65 with cruise control on. Cruise went off and ABS light came on. A couple minutes later it went into fail mode with no change in engine performance. Than service engine light came on. I drove an additional 60 miles home. The next morning no warning lights, and drove a few miles and again fail mode. I checked the computer codes and got one code P2106, which indicated throttle actuator control system. I reset the computer and drove several days with no problems. I called two ford dealers and was told the in the fail safe mode the vehicle should have performance reduction. Yesterday while in a parking lot the fail mode once again appeared with no service engine light. Restarted engine and everything OK. Any ideas?

Thanks

Yes, it is a drive-by-wire system. I have no accelerator pedal whatsoever when I turn the car to the arm position or started the throttle body you can hear it click three times but then nothing. I changed the actuator motor and I've changed the throttle positioning sensor. It has done this to me three times. The first time for three days the second time for a couple hours and then this time for 3 days now.

Yes, the codes are p0122, p0223, p022, p2104, p2112, 6 p2110 and p2111. I know I do not have the voltage measurements for the accelerator pedal.

My truck wouldn't start before. I took it to the dealership and they had to reset the anti theft system. Now it wont accelerate over 20 mph

Thanks for this post I had this problem and fixed it by doing the service. I love this site.

I was having a problem with my o/d light flashing and my truck would kick out of over drive. So I replaced the speed sensor control and it ran fine for about two weeks. Then one day I went to the store and it would not go above 30mph. I was told it is in limp mode and have replaced the "TPC" sensor, the mass air intake sensor and replaced the O2 sensor and none of these have seemed to fix it. Please help!