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Discussion Starter #1
Driving the car last night around 1.5k the car was dead till about 2k and away she went turbo again so I said i'll check it tomorrow (today) I nipped out and it was still doing it and now its
came on with the engine light and no turbo, I put the car on the computer and its coming up p2562 Turbo Position repeat signal valve position too distant in relation to the reference value

I checked the live data and noticed that

turbo valve was 88%
turbo reference was 0%
turbo repeat sensor was 88%

I cleared the code and the car still had a dead spot around 1.6 to 2k


after I cleared the codes the live data was

turbo valve was 88%
turbo reference was 88%
turbo repeat sensor was 88%


would this be a repeat sensor?

thanks
 

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i had the same problem, and i changed he repeat sensor which was a pain due to access, if i remember right, i got access through the nearside wheel well after removing the cover, and laying a yoga mat(!) on top of the engine bay and laying on the engine to reach down to the top most screw...i used a philips head attached to a ratchet ring spanner, and an index finger tip holding the head of the philips bit in place if that makes any sense?...those three silly little screws took ages.
torx screws would've been easier as they would've been less likely for the bit to fall out the head of the screw.

In my cars case though, the repeat sensor was getting crappy readings due to the vnt vanes being stuck in one position, so freeing the vanes up with a handheld vacuum pump attached the the pipe that goes into the solenoid at the top back left of the engine got the turbo boosting properly again.

Hope that helps.:thumb:
 

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Seems to be the week for RHR turbo issues. The turbo reference value of 0 indicates the ECU has "switched off" the turbo ie doesn't actuate the actuator (wastegate?) at all.

Check turbo repeat with key on engine off, should be about 10% or so. Mine shows complete junk values of 20-30 when reference is 80 or so - but I'm going to get the garage to check for a vacuum leak first as this has been an intermittent problem gradually getting worse.

Hence at the moment I'm driving around with no turbo - surprising what a difference it makes although these diesels still have some grunt if you work them hard!

MightyMission - I'd read the sensor needs a calibrating procedure, did you do this and was it hard?!
 

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mine didn't seem to need calibration, though it wasn't the sensor at fault apparently as once it was changed, it still didn't boost! of course the sensor only reads how much pressure is made/requested, my issue was the vanes inside the turbo were stuck, so no boost would be made...once the vanes were unstuck, the two pressure related faults disappeared.
 

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i know the feeling! several garages misdiagnosed the issue, one just asked me to rev the car as they held onto the boost pipe, when it didnt swell with pressurised air they said : new turbo £700 plus labour, call it £850..obviously this was once while sucking in air through his teeth and many cups of tea...

I'd recommend getting a handheld vacuum pump off ebay or amazon. they're about £15 i think. At least then each solenoid and hose can be checked for leaks, which will hopefully narrow it right down to something simple and easy to fix :)
 

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Discussion Starter #7
thanks for the advice guys, I was talking to a guy about my car on Friday night and he told me it could be the boost valve on the back of the engine as
he had the same fault and swapped it for a new one and it was fixed, I tried this and its still the same so fingers crossed the new sensor comes tomorrow I was told it could take around 45mins to 1hr to fit this, I was going to go in from the side of the engine with the battery out and tray out and see if this give me more room, I will try and get a video of the job and a few snap shots.

what brand of repeat sensor did you get I got one that comes with 2 years warranty and OE spec for £35 I thought this was a good deal?
 

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Discussion Starter #9
Well got the new sensor today was working fine till I got up to 50mph and the light came back on and coming up turbo voltage too high I tryed to start the car it would not start I have a crap load of codes, am going to take out the new sensor and put the other one in and see if it starts
 

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Discussion Starter #11
I looked at the live data and the turbo repeat sensor was at 82% were it was at 11% when I put the new sensor in I have now replaced the new sensor with the old and started no problem, I think that the sensor was requesting too much volts and it give me the codes I never took a screenshot but were fuel rail sensor, cam sensor fault and high pressure fault ect
 

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could be a silly question, but it may narrow down the likely causes: have you had a look at the map sensor? its only a pair of t15/t20 torx bits to take it off, and quite easy to clean if you go gently. Sometimes they get so caked in oil the turbo lets by that its a miracle it reads any pressure at all
 

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Discussion Starter #17
am near sure it was t27 had it off and cleaned it and found this IAT sensor to be dirty will post pictures up and you can see how bad it was,

Repeat sensor said voltage too high so if it was pulling more voltage then am sure it was pulling it from some of the other sensors,

the thing is now do I order another sensor from another place and try that or would it be my luck the sensor the new sensor was faulty?:confused:
 

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Discussion Starter #19
I got the replacement sensor today fitted it and cleared the codes and took it for a drive before I started it the turbo repeat sensor was at 11% before it was 100% so that must be good?

next up took it for a quick drive and back again the engine light stayed off but I looked at the live data it was at 100% when it was turned off so I waited for a few mins then it started to drop slowly 98 97 96 ect were it rested at 11% I started the car and found that it would rise to 98 100% then drop back down to 85/88 % when I rev the car it would shoot to 100% and drop back down to 88%

wish me luck this is fixed as I will be away for the weekend I hope it does not let me start the car again that's my big worry. I have packed the tools incase it doe need changed so I should be able to do it with in a hour lol
 
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