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Discussion Starter #1
Treat the Pug to a full service today and noticed it smokes a bit and to be fair the emission's stink quite acrid , after taking it a drive around the block and driving up hill in second with high revs in an attempt to clear it the Anti Pollution light came on and wording in central console display. fault code P0238 -Turbocharger Boost Sensor A Circuit High (taken from red brick snap on scanner mt2500) once cleared and reran it came back on again !! 6 hours of googling and im no closer , car is a 90bhp 1.6 hdi

Bit of history - car is a 2006 90hp 1.6 hdi light front end damage in September 2010 and hasnt been driven since only light idleing , today is the first time it was driven.

Looking at the internet it could be turbo solenoid (anyone know where this is?) however noticed a poster who said a loose air filter pipe (air filter element renewed today) also changed the fuel filter and it was a bugger to prime and took ages to start , now takes a few cranks to turn over when it was pretty rapid before.

Any help or advice would be much appreciated

UPDATE-

The fault only occurs at exactly 2700rpm every time and it suffers no degraded performance , pick up is exactly the same as before.

All air filter pipes checked and rechecked as tight and car starts as it should now after bleeding through the new fuel filter.

Iv read that it could be the turbo boost solenoid , is this the one on the top of the rad with 2 vac pipes and a grey multiplug? If so i removed this and ran the car , it behaved exactly the same as before with no degraded performance and the light came on as the car reached 2700rpm - interesting to note that the car needs to be driven to register the fault and mostly up a hill , it will sit still and be revved beyond 4000rpm no problems it appears its when there is a load on the engine.

Any pointers or help would be most appreciated as im slowly losing the will to live
 

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P0238/P0069
For EDC16C3; Possible causes:
Turbo failure. This fault can be attributed to turbo wastegate calibration. No physical fault with component but incorrect setting of wastegate, causing over boost under certain conditions. This fault code is also generated by diconnecting the sensor.

Check the sensor line first to make sure it's not come off. if thats ok...
Trace the hose back from the turbo it should connect to the middle port on the electovalve. grey plug could be the turbo control, i can tell you that the blue one is the EGR for a fact. And vaccum should be applied to the top port. you can also swap these electrovalves with the egr one to trouble shoot. with power off the top and middle port are connected together :thumb:
 

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stvstx said:
P0238/P0069
For EDC16C3; Possible causes:
Turbo failure. This fault can be attributed to turbo wastegate calibration. No physical fault with component but incorrect setting of wastegate, causing over boost under certain conditions. This fault code is also generated by diconnecting the sensor.

Check the sensor line first to make sure it's not come off. if thats ok...
Trace the hose back from the turbo it should connect to the middle port on the electovalve. grey plug could be the turbo control, i can tell you that the blue one is the EGR for a fact. And vaccum should be applied to the top port. you can also swap these electrovalves with the egr one to trouble shoot. with power off the top and middle port are connected together
Give that man the clap :lol:
:clap: :clap: :clap:
 

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Discussion Starter #6
Betty - Great link , thanks very much im ordering one. Once here you can stick me on your map , i live in Rotherham , South Yorkshire incase there is no one else around here?

stvst - Many thanks for your time, i was going to jack it up today and follow the turbo vac hose around the back of the engine. Another poster (david) told me the sensor is around the rear of the engine above the driveshaft? A mate is breaking one at the minute so i may borrow a few bits.

It was hit on the front originally low down through the x-member (in the accident)and i checked wastegate which is undamaged and the yellow tracer paint is still exactly lined up. How would i adjust it , as an amateur mechanic without blowing it up?

Im a body repairer/ engineer but specialising in theft/fraud vehicles and all aspects of modern body repair utilising Boron steels and the PAS125 accreditation (keep in mind should any members have problems with repairers or insurance companies .I know enough mechanical to get by strip rebuilds and drivetrains etc , airbags im great with and their diagnostic but Engine management kills me !

Collyflower - I did indeed and now avoid petrol stations in the early hours :D I searched the fault originally on google and it brought up your thread , hence me finding and joining this group :thumb:

Guys , your help so far has been immense and very much appreciated , il keep you posted on the progress / ask any further questions if thats ok :D
 

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hi mate,

I suspect its a faulty MAP sensor.. does the car drive differently??

as Betty has suggested, best way forward is to get the car hooked up to Planet and way forward from there..

failing that, it could be the FAP filter, although it might be giving warning it may be clogged, could be one of the sensors..

attached what it looks like for further info.

have you checked the Planet map on Bettys signature to see anyone near you could help?

let us know mate..

good luck..
 

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Discussion Starter #8
Hey buddy,

I suspected MAP so unplugged it , engine management light came on straight away and it wouldnt rev and drove like crap , plugged back in light stayed on but it would drive normally so i would think that can be discounted?

Unfortunately no one near here with planet , mine is on a slow (but cheap) boat from China so will plug in as soon as it lands , my snap on would read it but the can bus isnt working for some reason ??!! so had to use old ODDB snap on software (not good but knocks light out)

The car is for the missus and after driving the Polo the last 2 years with EM light on i think its only fair i sort this one before she is let loose in it otherwise she will think amber lights are supposed to be on when she drives a car ;)

Cheers for your help

Pete
 

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Scotcruz said:
hi mate,

I suspect its a faulty MAP sensor.. does the car drive differently??

as Betty has suggested, best way forward is to get the car hooked up to Planet and way forward from there..

failing that, it could be the FAP filter, although it might be giving warning it may be clogged, could be one of the sensors..

attached what it looks like for further info.

have you checked the Planet map on Bettys signature to see anyone near you could help?

let us know mate..

good luck..
Nice attachment, have you got the same PDF/JPEC, etc for a 2004 307 SW 1.6HDI?
 
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