Range rove 2004 is in engine failsafe mode is not starting?

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Thread: Need Help please Engine Failsafe what is it? - Range Rovers

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Oct 19, 2011 - 8 posts - ‎6 authors
I still drove my car with this engine fail-safe prog because i know all ... if you fail to do these things with most range rovers, you will always be in ... Thread: Engine failsafe mode after lambda sensor change
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Re: Engine failsafe prog
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Jan 16, 2009
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engine failsafe mode ' LandyZone - Land Rover Forum

I answered your other same question

If you have to add coolant,it had to go somewhere
as no fluids are consumed

So you have serious problems like a bad coolant
leak or bad head gasket if no visible leak can be found

You need a repair shop

No one can guess & help you from the internet

Repairs have to be made then know how to get out
of fail safe if that applies

That job will required factory reference material to
understand the problem & diagnose it

hi
my car " landrove discovery 3 "give me two message " engine failsafe, suspension inactived, what can I do??? cause his don't starting

It depends on what you mean by electronic thermostat wire. I assume you have the L322 Range Rover with the BMW M62 4.4 litre V8 petrol engine. It has a heater in the coolant thermostat which causes the thermostat to open further when the engine gets too hot.. The wiring to this often fails due to coolant leakage into the cable. Disconnecting it will make no difference to the running of the engine. (On mine, it has been disconnected due to corrosion).

does your car have auto climate control or manual ?? if manual most likely you have a vaccum leak ..this is # 1 problem for failsafe mode ..start by listening to your engine while it is running with the hood open and listen for a hissing sound..(check pcv hose and elbow)

Sometimes this can be due to a dirty Mass Air Flow sensor, you can clean with a cue tip and alchohol.

Bad ignition coil,spiking the PCM,spike comes back on TPS Sensor,then to PCM again,putting the car into ETC Failsafe,and you can only go 6 MPH.

If the coils are not the issue,then the 2110 & 2107 come into play, and you spend $700,00 just for a new throttle body. The motor in it is not replaceable as of 2010,may be some day
In that case you better put it on yourself. Only (4) 10mm bolts,but you have to drain a little coolant,as it goes thru the throttle housing

try disconecting the battery for 5 mins see if it reeboots computer.

Just a quick mention - for about a month my XK8 low coolant light came on intermittently. This week with no notice while driving normally I got Stability Control Fail and FailSafe Engine Mode and wtih great difficulty got the car back to where I started from (less than a mile). Two days later (when got time) and after a bit of research, I tried it again - same problem and a very unhappy engine. I then disconnected the battery for 15 minutes (probably more) to clear the engine codes as well as check all the wiring and vacuum stuff I could under the hood (at a Jaguar master mechanic's recommendation). No problems found but the car would start and immediately stall with the air intake hose disconnected from the intake butterfly. After I reconnected the air intake hose, she started and purred like normal. The problem is the BATTERY... It is low - I've known it for a LONG time BUT it always started right up and never skipped a beat. I intend to replace it tonight but fully expect that's the issue. I've had the car 6 years (it's a 98) and had NO problems except a dead taillight asembly.

Hope this is of value...

change the sender unit ,its on the head right hand side