03 2.0 limp mode and anti-pollution fault - olivier74
Hi all,
I am sure this subject has been covered before but thought mine might be different as several causes can trigger the same warning light...this is a 2.0 HDi 110bhp
My car is basically in limp-home mode most of the time, no turbo at the moment with the warning light showing anti-pollution fault.
A diagnostic showed 3 errors:
-glow plugs (believe they have never been changed but surely can't be the explanation!)
-air flow
-turbo pressure
I had some lack power on and off over the last month or two and since I got the anti-pollution light on, a week ago, I had the power on and off for a few days, now no turbo pressure at all.
I checked the pipe from the intercooler to the turbo when accelerating, not changing and can't really see much the rest of the turbo pipes for leaks being at the back of the engine compartment.
The car has 130k miles, is just the turbo being on its way or anything more simple that would trigger the car to limp-home mode?
Thanks
03 2.0 limp mode and anti-pollution fault - tony@tooting
As you thought, the glow plug light would not trip the car into limp home.
Do you have the codes that were stored? I would help to have them.
I would suspect one of the following. Turbo failure, air leak (ie split pipe.) Egr fault.
03 2.0 limp mode and anti-pollution fault - olivier74
I got the car to a diesel injection specialist who has run a diagnostic as well. Previous codes were reset (ie air flow, turbo pressure and glow plug)
He couldn't do anything and will need to go to a main dealer.
The faults showing this time are:
P0380 pre-heating relay circuit (guess glow plugs need changing)
P0243 turbocharger solenoid valve

I might get the dealer to change the glow pugs which I have already bought as looking very fidly to change, depending how much they ask.
and see what they find with their diagnostic. I seem to remeber having had the solenoid valves changed on a previous HDi when under warantee, maybe won't be too expensive. I might tell Peugeot dealer about my diagnostic so not trying to get me to change more!!
03 2.0 limp mode and anti-pollution fault - olivier74
I just found what I believe to be the MAF (on top part of the air-filter leading to the engine, below the connector) one of the 2 wires is broken/missing...guess that could be the air-flow fault and limiting the turbo pressure!!
03 2.0 limp mode and anti-pollution fault - tony@tooting
A MAF would have more that two wires, so thats not a MAF. Sounds more like an air temp transmitter. Can you post a link to a pick?
03 2.0 limp mode and anti-pollution fault - olivier74
It did look like a MAF to me, between the top of the air filter and the engine. One little metal plate/wire inside it was broken.
I have pasted a link to one I could buy myself and replace, but I might still need the main dealer to reset the antipollution fault and will it self reset? A previous visit at another garage highlighted a fault with a solenoid valve, could that be due to that faulty MAF?

here is a link to the MAF replacement part Siemens 5WK9612,
www.airflowmeters.co.uk/detailspage.aspx?searchStr...9

Cheers
03 2.0 limp mode and anti-pollution fault - olivier74
I have found the parts in stock at a main dealer near me, so will have a go at fitting them, starting with the mass air sensor. Would it be a good idea to disconnect the battery for a while to reset the ECU and reconnect with new MAF readings?
Regarding the highlighed fault for the turbocharger solenoid valve, they have it to, so might as well buy it and return if cured with MAF alone...
03 2.0 limp mode and anti-pollution fault - olivier74
Solenoid valve didn't need changing, one of the 2 wires on the EGR valve had snapped, bit of a fiddly job to reconnect but fault has diappeared after diconnecting the battery for 30min...and now have the turbo back on!!
03 2.0 limp mode and anti-pollution fault - andyeazy123

i notised you have fixed a problem a lot of people have came across.

mines in limp oil in turbo connected a new maf but the car performs better without it is this right

03 2.0 limp mode and anti-pollution fault - hardway

If you unplug the MAF then the ECU gets no/wrong signal so it pulls stored information from it's memory and substitutes it for the MAF signal to run the vehicle

But if you have oil on/round the turbo vanes or inlet ducting then it's a safe bet the turbo seals are gone.

03 2.0 limp mode and anti-pollution fault - Gibbo_Wirral

Agree. It will be in a default mode and end up using more fuel as it won't be reading the live data at the air sensor and adjusting accordingly.

03 2.0 limp mode and anti-pollution fault - cherrycoke

sorry for reviving but i have the same thing happening to mine 307sw. what is the most likely reason for this? this is what i got when reading faults:1446, 1442, 1435, 1425, 0246, 0243. most of these link together(3 of them are related to diesel additive) one is exhaust temp sensor and the last 2 are the same as everybody else, no turbo boost

03 2.0 limp mode and anti-pollution fault - hardway

Turbos only fail for one of two reasons,

either something got sucked in and damaged the vanes which is very rare,

or a lack of oil changes has killed the turbo bearings.

which is most likely.

03 2.0 limp mode and anti-pollution fault - Peter.N.

If its the 8 valve Hdi engine the pressure regulator on the back of the HP pump can be responsible for a lot of problems.

03 2.0 limp mode and anti-pollution fault - Gibbo_Wirral

If your car has an additive system and any of the components aren't working, then the DPF will soon get blocked and it will go into limp mode.

Get a diagnostic check to find out where the problem is. The common faults are:

Additive tank empty

Electrical connectors to tank damaged

Fuel cap magnets missing

Glow plugs need replacing

Cooling fan not working

03 2.0 limp mode and anti-pollution fault - cherrycoke

thanks for quick answer. yes one of the codes were additive tank empty! is that really what is making it get into limp mode? and would it start working if i fill it ? i have pictures of the diagnosis since my friend work at a garage with borsch diagnosis but i cant find any way to upload

03 2.0 limp mode and anti-pollution fault - cherrycoke
Also, if it is a connector and i fix it, will the limp mode stop by itself, by restart or do i have to delete codes?
03 2.0 limp mode and anti-pollution fault - hardway

Not as simple as "filling the addative tank".

it has to be reset with the correct diagnostics,

and thats if there are no faults with the addative system.

But your mates BOSCH ought to be able to access the addative ECU.

03 2.0 limp mode and anti-pollution fault - cherrycoke
Of course, what i meant by that is If i go to the Peugeot Garage and make them fill it and reset then it world be ok? I was wondering if it really could be the additive tank being empty that was making it go Into limp mode since i now know its completely empty or if its most likely something mor serious? I really not want to spend that much money on additive if its not going to make it normal again, that fluid is reaaaally expensive :/
03 2.0 limp mode and anti-pollution fault - Gibbo_Wirral

You can get the additive and top it up yourself - providing you have the tank installed and not a pouch system.

You then need Peugeot Planet or Diagbox to tell the car its had the tank refilled. Either a dealer can do this or you can find a fellow Pug owner with the gear and the experience. Google "Peugeot Planet Map". It takes just five minutes to do, and if you were Merseyside based for example, I'd do it for free.

However, that won't necessarily cure your problem. It all depends how long your car has been running without any additive. An injection of fresh additive may not be enough to clean the DPF if its completely blocked, so you'd need to look at getting it cleaned or just replaced.

03 2.0 limp mode and anti-pollution fault - cherrycoke

i see, would this forced regen fix that? so i can be sure this have not damaged the turbo at least?

03 2.0 limp mode and anti-pollution fault - dadbif
It is easy to top up the Eolys pouches, there is a non return valve in the top, just use the spout of a small funnel to open the valve and pour the fluid in, don't overfill it or it won't fit in the container it goes in...you will of course need to get the counter reset by someone.
03 2.0 limp mode and anti-pollution fault - cherrycoke

tnx, yes i know :) i have a tank by the way, but i dont want to use extra money on this if the turbo or other very expensive things are likely to be damaged now cause then i might as well just buy a new car for the money sadly.. i only wonder if there may be other damages now :/

03 2.0 limp mode and anti-pollution fault - hardway

Plugging in Peugeot planet diagnostics permits access to the addative

ECU so any faults can be read,

So as you can judge if it makes financial sense to go ahead.

If there are no faults the % of crap in the DPF can also be read.

But I guess your going to need an Eloys fill,reset and try a re- gen which if it doesen't work it'll need a new DPF.

So best bet is get the car global scanned for engine and addative ECU faults to decide how much and if you go on.

Whithout this scan your just guessing,

which always ends up expensive!

 

Value my car