1st off hi to everyone, i've used this site a couple of times for info but thought now's the time to register and air a problem i've got.
Driving normally the other week the engine light on the dash came and 'ANTIPOLLUTION FAULT" came on the display (fine weather). I've had no loss of power and everything seems fine when i drive, NO limp home mode, no loss of power etc. I've tried disconnecting the battery for 20-30mins in a vain hope of clearing the fault but nothing. Took the car to a mates garage and plugged the car in 2 weeks ago Sunday (7th September) and had the codes cleared (came back with faults P0380 & P 0221). Everything had been working fine all week until last Sunday 14th (week to the day). Driving back from Swansea and 'ANTIPOLLUTION FAULT' popped back up.
I reckon its either
a. EGR valve
b. Throttle position sensor
c. MAF/MAP sensor
Any advance or advice would be welcome as its driving me round the bend....P.S it's a 206 DIESEL 2.0HDI D-Turbo.
Thanks
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Nathan
Guesswork will get you nowhere on one of these. First; can that scanner read manufacturer-specific codes too, or just the semi-useless EOBD ones?
P0380 would suggest you've got at least one glowplug gone - quite normal for an HDi. Doesn't put the AP warning on.
P0221 needs care; it's for one track of the accelerator pedal position sensor [no TPS fitted on any HDi] and can be tripped by odd feedback in the wiring. If you've got a 'scope, display the two tracks simultaneously at idle and see if there are any drop-outs or shash.
I'd wonder if the real code is a P1xxx code and you haven't read it.
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Hi Screwloose i've read all your other replies and you appear to be THE authority on HDI'd or diesels for that matter.
I dont know what diagnostics my mates uses. Do you think its worth me taking it to Peugeot to get the correct codes. I realise from reading your replies that P0380 is a useless and common fault. I dont understand what you mean by 'scope' though. Like i said in the original post i dont have any loss of power but its just guess work at the moment.
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Sorry; DE's shorthand. Oscilloscope - one of the most essential and often needed tools when checking-out codes.
What sort of tool was it? A cheap code-reader, or a professional scan-tool that lives in a suitcase?
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Im not to sure but i shall find out today and post back a bit later, thanks for your help.
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Right, i've spoken to my mate. He took it to one of his mates garages. It wasn't a diagnostics device thats kept in a case. He said its a new device, its handheld, has 2 handles on it and cost thousands. I dont think i could get more vague if i tried. Sorry.
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Rite, still have no idea whats wrong with the car so bit the bullet and on the way to work today popped into a French car "specialist". Explained the problem i.e ANTI POLLUTION FAULT and the mechanic, without even looking at the car, said "that'll be expensive, you need the diesel additive replaced, you'll also need a new fuel sensor and fuel cap? (no to sure if u got the fuel cap bit right but i definitely needed something else)
After reading many threads on here with 307hdi's and ANTI POLLUTION FAULT's i realise that they need/have a problem with the diesel additive but i wasn't aware that 206hdi d-turbo's needed it as-well as explained to me by 'South Wales' leading Peugeot, Renault and Citroen specialist!'
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Car is now booked in to my not so local Peugeot Dealer to be put on the diagnostics machine to the tune of £40, plus i lose the use of my car for the entire day.
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******update******
Car's been to Peugeot now and after being on the diagnostic machine returned the fault P0221. It's been written on the receipt and explained to me that this is the THROTTLE POTENTIOMETER thats causing the problem and will cost £133.95 all in. Will get this changed ASAP but as im going away next week it will have to wait until my return. Hope this helps anyone with the same problem.
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Hope it does actually clear the fault - most times it just comes back.
Tell you dealer that it's called an Accelerator Pedal Position sensor - a TPS is something else entirely.
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So what your saying is Peugeot are wrong (no surprise there) and the part they advised/have confirmed is faulty (part number 1601NY) doesn't actually exist on the car, FANTASTIC!!!!.
So whats the difference between a Throttle Potentiometer TPS and an a Accelerator Pedal Position sensor and more importantly why do Pug think i've got a TPS on my car.
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What I'm saying is, that if they bother to check; that P0221 code refers to a faulty SIGNAL from the accelerator pedal position sensor's track 2 CIRCUIT. [If they follow the throttle cable; they'll find it clipped by the air filter housing....]
Just because that code appears on an HDi does not necessarily mean that the sensor is faulty; to confirm the exact cause requires the skilled use of a twin-track oscilloscope.
[Or just throw expensive parts at it - at the customer's risk - and hope...]
An APP sensor tells the ECU how much throttle is requested by the driver; while a throttle position sensor reports the current angle of the throttle plate to the ECU. As no HDi uses such a device; the ECU would have been somewhat surprised by the arrival of such information and I'd have hoped that a dealer would have known that....
The fact that a dealer doesn't know the difference between an APP sensor and a TPS probably explains why so many people find that they can't diagnose to save their lives.
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In light of this revelation could you recommend a garage or person in south wales who is actually any good. I will travel further if needed as in the long run it will be a lot cheaper. Also would you suggest my 1st port of call should be an a APP sensor.
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Sorry; don't know anything about Wales. Try asking you local motor factor or car tool van who's good at diagnostics. Anyone who's equipped themselves with an oscilloscope will usually have learned to use it effectively.
Or just let the dealer try - I'd estimate about a 30% chance of success. I'd clean the plug on the APP sensor with electrical contact cleaner before doing anything else.
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Sorry to sound incredibly stupid but whats a motor factor, and whats a car tool van, is that like a mobile diagnostic machine.
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Ahh.....
...perhaps you'd better stick to the dealer. I can see you getting into problems here.
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Hah your not wrong there. I just want my car working again but dont want to have to throw expensive parts at it on guess work from Pug or another garage like the one i mentioned in a previous post that told me i needed the diesel additive changed. There are so many 'garages' out there that haven't got a clue. Thanks for all your help and advice.
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You're right on that point; manufacturers built cars that needed PhDs to understand and then expected lads with no CSEs to cope.
Everyone in the business is unable to keep up - even if they spent 40hrs every week on courses; they still wouldn't know 10% of what they need to know.
I only know 5% of what I need to - and that worries me.
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Well your 5% is better than my 0% and from trawling through 1000's of posts on here i dare say your 5% is a lot more appreciated, more like 95%. Thanks for your help Screwloose
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Hi there,
When it comes to loose screws, it seems like you have the least... With regards to the posts above, I have a 206cc and it looks like you're discussing a HDi with a "ANTIPOLLUTION FAULT"?
My 206cc also started giving the "ANTIPOLLUTION FAULT" message intermittently and since last month, it comes up every time.
Thought you might have some tips to a novice (less than your 5%) on what to check/do before one resorts to the "wonderful" dealers?
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You're right on that point; manufacturers built cars that needed PhDs to understand and then expected lads with no CSEs to cope. Everyone in the business is unable to keep up - even if they spent 40hrs every week on courses; they still wouldn't know 10% of what they need to know. I only know 5% of what I need to - and that worries me.
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Spot On Screwloose.
CSE's means your old school like myself.
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The additive (EOLYS) is just that - an additive. You don't change it - you get it topped up! At £25 a litre it is too expensive to throw away!
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You were supposed to discard any remaining Eolys and never to mix old and new; not something that's often done and doesn't seem to cause any obvious problems.
A 2.0 HDi 206 doesn't even have a FAP, so the dealers got that wrong too....
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Thats wasn't a dealer who got that wrong, that was 'South Wales' leading Peugeot, Renault and Citroen specialist!' so its worse in my opinion. People trust him with everything French not just Pug.
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Thank you for your polite correction Screwloose. Why would people be doing things to an EOLYS reservoir before it was empty? If it is has 1 litre left and needs 4 to top it up couldn't one just run it until it was nearer empty?
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hi there where abouts do you top up the eolys and where abouts is it located ??
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