Fail Safe Engine Mode

2004 Ford Explorer Fail Safe Mode Computer Problem 2004 Ford

That code is for Second down stream oxygen sensor heater resistance, heater current requirements too low or too high (bank2)

top up oil

let someone scan for engine code.
replacing parts wont help.
ford have fuel pump problems to

I have hearing a lot of this lately with Fords. Most of the time this dash board light comes on due to problems with the Throttle Body (TB)not just your coolant,etc.. If it is sticking,dirty,causing misfires,etc. then this can cause an engine fail safe mode.You might first try putting in some injector cleaner and a higher grade of gas.Many people I know who have had this problem have had to have their TB cleaned and/or replaced. This is something Ford dealerships now about,but hasn't been made a recall or anything.There are service bulletins though.Mainly keeping cleaner in your gas and performing ritual tune-ups/oil changes may be the only thing you can do.Hope this helps

Sounds like your mass air flow meter is at faul.Replace it.Good luck.

I do not know about a Jag. But the "fail safe engine mode " on my GMC means the Engine Controll Computer has quit working.

its not that hard to fix, i did it my self on 3000gt.

I encountered the same problem, my engine fail safe mode light came on and shut the car down. I took my car to my mechanic and he found the solution to the problem. The car needed a throttle body cleaning and the fuel filter needed to be replaced. After having my truck serviced my mileage increased from 14.6 mpg to 15.4 mpg
ENGINE FAILED SAFE MODE WARNING LIGHT, GONE Total cost $86.45

The check engine light indicates a fault in the engine management systems. Your car has stopped accelerating because it is locked in fail safe mode and normally you should be able to accelerate just enough to limp to the dealer where they wil scan the computer.
Cheers.