Ford F-150 (2004-2008) :: CEL After Engine Failsafe Mode Message
Oct 17, 2011
I have a 2004 F-150 Lariat with a 5.4. (FYI-Have not had clockspring recall fixed yet)
124K miles. Vehicle has been operated in AZ and TX only until coming to Minot, ND 6 weeks ago.
3 days ago I got an "Engine Failsafe Mode" on startup. I shut the vehicle off immediately. Started it up again and the "Engine Failsafe Mode" message disappeared, but the engine light came on and has stayed on for the last 3 days. It seems to be running ok, maybe a little rough.
I ran the reset info on the dash screen and all systems read out OK. I have not run the truck over 40 mph since, and not on the highway, but it seems to accelerate without a lot of hesitation.
I've seen in other forums that this might be a dirty or faulty throttle body and/or the dealer may be able to re-flash with updates but this is old 2004 info from newer owners back then.
What am I looking at from a time/price angle when going to the Dealer for service? I don't want to replace a throttle body if it just needs to be cleaned and re-flashed because I'm ignorant.
Anything I should watch out for? I'm not a competent mechanic!
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Well my p2106 code seems to be different from all the other ones Ive read. I get the p2106 code after the truck goes into "FAILSAFE MODE" and it only goes into failsafe mode the moment the truck reaches 40mph and then loses all its power. I turn the truck off and back on and its back to normal until I go 40mph again. I scan it and only get one code p2106. The truck idles and runs perfectly until it reaches 40mph! I've replaced the entire throttle body with a new one from ford and it keeps doing the same thing. I don't want to keep buying electronic parts as they are not returnable. My truck is a 2005 Expedition with 72k miles on it
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2005 ford f-150 Lariet goes into failsafe mode while driving on freeway. This is a dangerous situation happened ever.
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So my Explorer is a 2004 Eddie Bauer v-6 with about 93K miles, great condition, very clean and never had any issues. I've had it about 6yrs.
For maybe 3-4 years now the truck has seemingly randomly gone into Engine Failsafe Mode in the message center. I haven't noticed any pattern here as to when/why this occurs. The wrench icon lights up as well as the Service Engine Soon light. Sometimes I seem to notice a change in power/performance but often I don't. There are times when this happens every few days, and sometimes it goes weeks without occurring. Often it just goes out of Failsafe Mode after I've turned the truck off and restarted and seems fine again. For all of these years this has been a nuisance more than anything and so I assumed(hoped) it was just a sensor issue and nothing to be worried with.
A few days ago the truck actually shut off while driving...losing power, immediately after it kicked into Failsafe Mode while driving slowly down a straight road (no inclines or anything). Today it went into Failsafe mode, and it kept running, however the gas pedal did nothing...I couldn't accelerate at all though I still had power. Coasted to a stop. Turned truck off, started right up and the gas pedal worked fine. 15 minutes later same thing...this time when I coasted to a stop...I noticed that when I put truck in reverse I WAS able to back up using the gas pedal but couldn't go forward. Turned truck off, ran fine though still in Failsafe Mode...drove home where it sits now.
Don't really wanna drive it now though I need it as my only source of transportation. I did have the scan done on it at Autozone a month or so ago and got the P2106 "Throttle Actuator Control System--Forced Limited Power" reading...which of course means nothing to me...and the guys who worked there had no idea either. I had the oil changed at Midas yesterday where they checked fluids and all that good stuff...I mentioned it before hand and they said they looked at anything they could and couldn't find anything without running diagnostics on it...I didn't have them do this as it is quite costly and at that point I hadn't experienced the issue with losing acceleration/gas pedal functioning while driving down the road.
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Problem started after an ignition coil went bad where '06 Accent w/ 45000 miles locks into 3rd gear failsafe mode. Changed coil and plugs, flushed transmission fluid and refilled with SPIII. Old fluid was very dirty but not full of metal bits. Car still goes into failsafe first time it reaches 3rd gear after initial startup. If you disconnect and reconnect battery after driving for 1-2 miles in 3rd gear the car works fine. Even after sitting for an hour and still slightly warm car works fine. If car gets cold again 2-3 hours later in winter you go into failsafe in first mile. Once again battery disconnect/reconnect puts it back to normal. I assume it is some type of sensor going bad and don't want to have a repair shop replacing good parts.
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I have an '04 F-150 4 x 4 Supercrew Lariat w/ the 5.4 V-8. It has 105,832 miles on it. No issues until a week ago. Battery light and "Check Charging System" message appear 30 seconds after cranking the engine. I have replaced the battery (Ford Motorcraft), belt and alternator (Motorcraft 130 Amp). Still getting battery light and error message. I've read some post that indicate it could be a short in the fuse box.
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There had been a lot of discussion about the engine light coming on and the Engine fail safe mode. A lot of folks said the dealer could not fix it. It happened to me and my dealer fixed it. This is what the dealer did to correct the problem
EEC Tested
Code P2106
Disconnected all wheel speed sensors and reprogramed PCM per SSM 17272 and Ford Hotline
No more problems.....
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I was driving down a road tonight and my entire truck shut down, and it said engine safe mode. I lost all power steering and gas, all I had were breaks and electronics. What does that mean?
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My 04 Message Center is out to get me.
The message center has been acting up. It went out - blank.
When I get in to take it to the dealership, it comes on.
When I get back home, it's dead.
I called the dealership and told them what's going on and they say to bring it in and they will look at it. Gee, if it's working they will say there is no problem. Been there done that on some other issues.
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2007 F-150 reg cab 4x4 One thing after another.Light in the middle of the dash says "passenger side airbag off". Never used to be on?
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I was plowing and when I put it in reverse it felt like it slipped, but then the dash message trans malfunction came up. I checked the codes and I got P0722 output shaft speed sensor.
Code P0720 (oss) sensor circuit fault
Then the truck went into safe mods. Is it just the sensor or is my reverse going out...
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I just got a new-to-me 2007 4.0L Explorer . When I turn the ignition to the on position, I get a message that says "Check charging system"...
Once I start the engine it goes away. Is this normal?
My battery reads 12.6 with the engine off and 13.8 with it on.
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I was driving home. Problems started after pulling away from a 4-way stop. Truck started lunging almost like I was running out of fuel. Then I got a "Transmission Malfunction" in the in dash display. Followed by limp mode. I checked the Faults when I got home. I have the following:
P0720 - Powertrain - Output speed sensor Circuit
P2106 - Powertrain - Throttle Actuator Control System - Forced Limited Power (From what I understand this is associated with limp mode. Not a root of the problem)
P0713 - Powertrain - Transmission Fluid Temp Sensor Circuit High Input
P0722 - Powertrain - Output Speed Sensor Circuit No Signal
The vehicle has around 192,000 mi. Replaced cam phasers in upper engine roughly 1000 miles ago and replaced all the bearings in the rear differential roughly 100 mi ago. I haven't messed with anything on the transmission. Checked fluid level and color of transmission fluid.
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Just fully rebuilt transmissin 4r75 replaced all planet gears clutches etc. Now with it all back together the speedo does not work on truck goes into limp mode. I replaced the vss sensor an no luck
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I just got an Egde Evo which I installed and everything looked great. After a few runs, I noticed the ABS light coming on an soon after that my transmission goes to limp mode (the wrench lights up).
I receive the DTC error: P2106 on the Edge Evo.
I have gone back to Factory default, but it keeps coming back, ie. the ABS light lights up and the Trans goes to Forced Limited Power (according to the Evo).
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At a loss right now. My 2004 F150 4X4 and just recently started sounding like the truck is trying to shift into 4X4 mode while driving it. It stops if it's switched into 4X4. I have taken it to a local mechanic shop I use and they said it was the Actuators and they replaced those. I got it back and the same day the noise came back. Took it back and they have had it for another week and still unable to figure it out. I even took it to another shop that was highly recommended and they say to take it to a Ford dealership. I have read that some say it could be the vacuum operated hubs? Need to figure out what it was and had it fixed?
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My 05 SD started to flash tow haul mode and check gauges message came on while I was towing my car hauler trans temp gauge quit working then check engine light came on too truck runs fine disconnected batteries then re connect them ( trailer now disconnected) problem solved for about 3 mi of driving then it came back w/o trailer I'm thinking rusty trailer ball on hitch caused this maybe not a good ground for trailer tow computer? What kind of scanner etc do I need to possibly clear this problem out? I am the original owner never seen this happen with this or any other trailer I've towed.
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I own a 2008 Prius. Yesterday, for the first time, the car would not go into On mode. Here are the steps I followed:
1. Confirm the car is in park.
2. Press the brake pedal.
3. Press the Power switch.
The amber light on the Power switch came on for a minute and then turned off. The instrumental panel remained dark.
The green light on the Park button came on. The audio and touch screen worked, as well as the power windows and power door locks. And, I was able to drive the car in reverse and to drive forward. I only drove a few feet back and forth on our driveway.
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Replaced HPFP 38,000 miles ago. Truck began going in limp mode without engine light, wrench came on in dash, gave codes for brake switch, anti-theft, some other weird codes. Had those codes cleared, ran for while then water separator came on, drained the water out, came back on. Read some forums, so I removed and cleaned the housing, cleaned off the sensor. Had code cleared and ran good for about a week. Then guess what engine light comes on, limp mode.
Went to Auto Zone, pulled code P0088. This truck runs awesome until limp mode. No other problems. I take it to the ford dealer, scanner pulled P0088 and the water separator code again. I have read alot of remarks about this P0088 code. Can there be another cause for pulling this code, only 38,000 miles later. I had them do the TSB 12-07-07 but I have also read it can only be done if the P0088 is the only code. I just really feel there is an underlying issue with these 6.4's.
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I have a 2008 F350 with a 6.4 Powerstroke diesel engine that just experienced total engine failure. It has around 65K miles.
There is a heavy burn star pattern on all 8 pistons, a few pistons are cracked, a few cylinder walls are scored, glow plugs are melted, both heads are cracked with multiple stress fractures in each head.
About 1 month previously, the transmission would not work in tow mode and caused the engine to go into limp home mode. The dealership just replaced the entire tranny as a warranty item. About 1 week before the engine failure, I put in a 5.25 oz bottle of Lucas injector cleaner with a full tank of gas.
The Ford dealership is saying that the star pattern on all 8 pistons is due to high pressure fuel overspray and is evidence that I had a tuner on this engine and that the warranty is invalid. I did not have a tuner. What might have caused this engine failure?
Also, they only ripped down the top half of the motor, not the bottom half. I heard this might have been caused by a cracked crank shaft, but Ford refuses to investigate this possibility.
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I have noticed that my 2008 Prius does not always engage EV mode (after I push the EV button) when the battery is green (nearly fully charged) and speed is well below 45 km/hr. Message displayed is "switching to EV mode is invalid now". So it seems there are factors at play other than the speed and the level of traction battery charge.
What these are? Is battery temperature monitored? Will the operation of the air conditioner affect it? Most times it doesn't but I wonder if under certain circumstances it might.
I use it at times if I am going up a slow speed incline, often from a standing start, knowing that there will be plenty of opportunity to recharge shortly after.
Weather here is pretty warm- around 30C maximum during the day.
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