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Hutchy70

Fault Code P1288 (Cylinder Head Temp Sensor Out Of Range)

11 posts in this topic

Hi Guys,

Just had a fault develop on my 2006 TDCi Mondeo and had to call my breakdown service. He diagnosed the error code P1288 (Cylinder Head Temp Sensor Out Of Range). The symptoms were that the temperature gauge dropped to zero, the engine warning light came on and the car lost power and went into Limp Mode. Also, after the car was parked the rad fan continued to run for about 5 mins. :angry:

Can anyone please tell me how to change this sensor :rolleyes: Do I need special tools to do the fix B)

Any help and with diagrams if poss would be greatly appreciated :D

My very best regards

Bob.

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Cant help you too much on the details, as I dont have access to any of the resources at the moment... this could be a misreading, as it could actually be a fault with the thermostat as opposed to anything else.

Have you checked that all senors are connected and well placed / stuck in place?

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Hi Jeebowhite,

Thanks for the tip, I will check the temp of the radiator when the fan stops, as I think if the thermostat was actually stuck the engine would start boiling and gushing steam (only my inexperienced guessing coming into play here -_- lol). The breakdown guy plugged a meter into the car which immediately gave this code P1288 which points directly to the C/head stat. I will let you know my findings after tonight.

Thanks for your response and advice :) ,

Best regards,

Bob.

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Hi Dan62,

Thanks for your response, I had a good look at this today and trace the cable leading to the Temp Sensor and it appears to be behind a pulley and as I see it, it looks like I will have to remove this pulley to get at the sensor :angry: I just can't see any other way (assuming I'm looking in the right place, ha, ha). Maybe the Ford parts dept. might confirm it's position etc. I will give them a call tomorrow and hope they'll talk to me :D

I heard somewhere that it needs a special spanner as it is recessed, do you know if that is correct also would you know of a link I can go to where I could see a diagram of it in situ ?

Very many thanks for your help,

Bob.

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or anyone with the Ford eCat lol, JohnH might be worth contacting, he is one who immediately comes to mind as having this software :)

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Hi again Guys,Well I finally got a new C/H Temp Sensor on eBay for £25 (New). I have now got the Haynes w/s Manual for my 2006 TDCi Mondeo also, however the manual was of little help on this (typical) :wacko: Anyway, I got stuck-in and here's the route I took should this be useful for future reference to anyone suffering the same problems I had. So here goes,

Firstly, I removed the cover over the pump pulley on the right hand side of the Cylinder Head which revealed the location of the sensor which was in a very tight working area. The manual said I needed to remove this pully to facilitate changing the sensor, yeh right :angry: However this pulley had convenient slots in it so you could pass a socket drive through to access the sensor.

Next, came the problem of the wire attached preventing the use of a normal socket wrench (a spanner was of no use either as the sensor is recessed) So I found an old 15mm socket and cut a slot to about 3/4 of the way down with a thin disc cutter to allow the wire to exit the side of the socket. I next had to stab the starter a few times to get the window slot in the pulley in just the right position, after disconnecting the plug connector I then carefully turned the sensor about a quarter of a turn at a time until the cable started to jam against the c/h, then by releasing and re-positioning the socket I was able to free and finally remove the sensor.

Finally, I fitted the new sensor in position and did the reverse procedure to tighten it, (It doesn't need much torque, about 6ft/lb only is recommended). I reconnected the plug and started the engine and voila, the engine warning light went out. So I took it for a test drive and found no further problems. I also had full turbo power again (no more limp mode) :rolleyes:. Job done and all in under one hour !

I hope this saga was not too boring, but I thought the procedure will be of some use to other FOC members.

My best regards to all,

Bob.

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Cheers for posting this I had the same problem, got myself the F super for my laptop and got the code P1288 installed the new part last weekend all is running properly now.

I put a quick video together from stills I took with my own rundown of how I did it.

Here it is, hope it helps someone in the future

It's on YouTube titled

"Cylinder Head Temperature Sensor Location and Removal Ford Mondeo TDCi 2.0 (2004)"

Regards

Stu

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I had the same issues with focus after changing cam-belt last weekend and damaged the wire. changed sensor today and every think works again, fan not on overdrive, coolant temp on dash, glow plug indicator wire on dash, so I know it working but the code P1288 has not reset itself. My hand held OBD II reader wont erase code. Would anyone take to a garage to reset or just leave it as I know I have fixed the fault?

Mick..

Sent from my iPhone using Ford OC

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