Nissan Almera 2.2 dci limp mode

magicjj5

Hi all

I recently got a 05 Nissan almera 2.2 diesel sport van with 75k kms on it. All was well until i valeted it and left it running with the heater on for about 45 mins to dry out the interior after the wet vac. When I drove it off there was a serious reduction in power and i struggled to get up to 100 km/h. i pulled over as soon as i could and stopped the engine. I restarted the engine and tried it and all was well.... temporarily until traffic the next morning which seems to knock on the limp mode when it idles, it then goes like the clappers when you restart the engine, any ideas to help with this problem are much appreciated, cheers in advance.

slight possibility that its carbon build up from idling for 45 mins,
could try an italian tune up !
or something like 10k boost

sounds like something electrical got wet though, may dry out on its own though!

magicjj5

thanks for the reply blind justice, I was thinking along those lines the engine malfunction light did come on briefly but went out again, I am trying to get time to get it to nissan so they can inspect and check the onboard diagnostics.

wreckers

hello chaps, new here so hello to everyone from me!
i have a nissan almera 2004 with same running problem, which is running fine until left on idle for few minutes. Power dissapears and wont run above 4000 rpm (limp mode), however if you switch engine off and restart all ok. i have read fault code and this fault in particullar P0089 fuel pressure regulator performance keeps comming back at all the time. I have been adviced that it could be sucttion control valve at the back of the pump that is not working correctly. I have now replaced this item and made things lot worse????
are there any adjustments or calibrations that can be done after replacing this suction control valve?
is there anyone amoungst us who got to the bottom of this P0089 fault code?
Thanks you everyone

Dougie99

Hi, i am new to this and i know the pain you are going through as i have just come out of this annoying fault. Drive the car for a while and all is ok, stop at a junction for more than 30 seconds and when pulling away the car goes into limp mode. Switch engine off and back on again and runs fine with no problems until you sit engine into idle again for more than 30 seconds.

I have read the horror stories of nissan charging over £1000 to replace the fuel pump, but this is probably not required in most of the cases of veichles with this problem. I have done lots of testing to the fuel pressure regulator and found this was ok and not at fault.
What i did do, after being advised on the net was i replaced the SCV- Suction Control Valve, which is on the fuel pump itself and can now be bought as a single part from nissan without the need to buy the whole flaming fuel pump, and cost me about £122 inc VAT. But after replacing the problem was still there, so i took it to nissan and got the fuel pump re-calibrated on their diagnostic machine (about £65 depending on dealer) and now works all fine.

No more P0089 (fuel pressure regulator performance 1) codes in either registered or pending codes within the ECU, so it may be worth trying that.

wreckers

Hello DOUGIE 99,

I have taken my Nissan almera 2.2 dci to a place called COLCHESTER FUEL INJECTIONS and ask them if they have facility to recalibrate-sinchronise my SUCTION CONTROL VALVE to Engine ECU as local chelmsford NISSAN DEALER WASN'T ANY HELP at all. All mechanics were so rude...wonder how they still have any business!!! anyway, upon asking this question workshop manager IAN From COLCHESTER FUEL INJECTIONS said that they are authorised DENSO dealer and they can do such operation (in fact they have more diagnostig equpiment than NISSAN themselves and they can rectify problem lot faster INTO DETAIL and dont charge ££££ like NISSAN!!!!!) I am telling you that these people know what they are DOING! After calibration, car worked perfectly fine and fault code P0089 has dissapeared and only charged me £68--not like nissan who wanted £1500 for new high fuel pump and labour and even this wouldnt CURE the problem?????
I also must say a BIG THANK YOU to man called DALE from one of the nissan forums, as he was the first person who advised me what really needs doing before spending ££££ on new high fuel pressure pump.
So, DALE if you are reading this, not only myself but MANY other hundreds of people are thankfull to you for stepping into this problem issue and helping us all out!!!!
VIVA LA DALE !!!!!!!!!!!!!!!!!!

minaz

I have the same problem. Fuel rail changed on 2.2 DCI engine. Is there any specialist in Midlands who can solve this. How can I contact Dale? Grateful for any help. Dealer useless & all others just interested in getting your money!! Code P0089

minaz

Spoke to Colchester Fuel Services Very helpful Thanks guys.

Long_Lam

hi Guys,

new to this forum as i've bee searching for a solution to a problem with my '05 Tino DCI.

it's not the same problem as highlighted here, but it's worth asking as i've been advised from a local Nissan garage that it could be a problem with the suction control valve or worse the fuel pump.

the symptoms are an erratic idle speed which revs between 1000-500rpm when i'm stationary. the problem doesn't show itself when driving, but sometimes when changing gears there is a jerk.
it is worse in the morning from a cold start and the engine almost seems it's going to cut off.

i don't have access to equipment to get the fault codes, how do i do that?

if you have any idea what the problem can be, i'd appreciate an reply.

I'll give Colchester a call to see if they recognise this problem.

thanks in advance,
Long.

EPM

Long_Lam wrote: »

i don't have access to equipment to get the fault codes, how do i do that?

If you've had it to a garage already they should be able to tell you

Mickeym530

iv seen this fault loadsa times and there is no cure only an injector pump..iv being working with nissan for the past 5 yrs and on the 2.2 dci fitted to primera p12,almera n16 xtrail and tino this p0089 means nothing but an injector pump..so no point doing whatever ur on bout its a pump fault,doin a fuel pump learn can sometimes hide the problem for a brief period but it will most definetly come back into the vehicle

Long_Lam

Mickeym530 wrote: »

iv seen this fault loadsa times and there is no cure only an injector pump.

hi Mickey, are you referring to my issue with the erratic engine idle or the problem of the original poster?

it sounds like the exact advice i was given by my local Nissan dealer, e.g. swap the suction control valve and if that doesn't fix the problem, then get a new fuel pump (at £2000 a pop). I recently got this car and it has warranty on it which will cover the parts, but the labour only up to £40/hour which won't cover the full labour rate.

cheers,
Long.

Mickeym530

sorry long lam,i didnt even read ur thread properly-i have seen that exact problem u are having twice on that 2.2dci but on p12 primera,and it was the suction control valve on the back of the high pressure pump,its held in with two torques and a block connector,10min job and then reset the fuel pump and she be flying it..

Long_Lam

Mickeym530 wrote: »

10min job and then reset the fuel pump and she be flying it..

hi Mickey,

I can't believe it's a 10 min job! where can i get that done? my local Nissan dealer in West London is quoting me about 2-3 hours work. the part itself (suction control valve) is about £150. does any of what they are telling me ring true...?

thanks,
Long.

Long_Lam

Hi guys,

i found my service sheet from the garage. the fault code is:

P1272 FRP Relief Valve.

seems I have a different problem...

Out of curiosity, does anyone know what make the ECU and fuel pump are? Bosch, etc?

thanks,
Long.

Mickeym530

im telling u the scv is bolted onto back of the injector pump with two torx bolts and then a block connector..they must b talking bout sumthing else,i can get u d original technical bulletin on this issue but i wnt b bk to work till nx thur as i got 4 wisdom teeth out,what was d west london dealer?

Mickeym530

ohh ya ther denso pumps,cant tink of the code straight off,the frp valve usually comes up as a pump fault but ur symptoms are d scv,ther only bout 90eur in ireland if i can remember correctly

Long_Lam

Mickeym530 wrote: »

i can get u d original technical bulletin on this issue but i wnt b bk to work till nx thur as i got 4 wisdom teeth out,what was d west london dealer?

hi,

I hope your operation went well... a colleague at work had 2 wisdom teeth taken out last week too...

the Nissan dealer is WLMG (West London Motor Group) in Shepperton. the advice i got was good i believe as i spoke to Colchester Fuel Injection and they confirmed that it could be either the suction control valve as well and also potentially a fuel filter.

I had the fuel filter changed my WLMG Shepperton today. the problem seems to have gone away, but i need to check it properly tomorrow morning as it really shows itself on a cold start.

If you're feeling up to it, can you send me that technical bulletin on this problem in case it rears its ugly head again.

thanks, hope you're feeling okay.

Long.

magicjj5

Hi all

After 11 Months I finally got my almera in to a garage to deal with the power problems i detailed when I started this thread. I had the garage check all parts of the system injection pump, injectors the whole lot. They came back to me saying there is an electronic problem which causes a mechanical problem inside the fuel pump and the best thing is to replace it with a new modified version of the pump which is now only available in the last 6 months(Ireland). Nissan are FULLY AWARE OF THIS PROBLEM and will supply the new modified pumps but NOT as a recall. So I have my pump on order due to be fitted Monday. I will keep posted how this goes towards solving the problem. I am sure anyone who has considered forking out the huge money to get this done will be interested to see if it solves the problem.
Many thanks to our friends in the UK who posted to this thread as this is a really bad problem and we all need all the info we can get.

magicjj5

hoorah!!!!!

I have my new fuel pump installed!!!! I managed to get my pump reconditioned as opposed to getting a brand new one from nissan only cost me €260.00. I also replaced the supply solenoid on the the back of the pump which cost €160.00. My new re-con pump had to be initialised by Hutton&Meade in Blanchardstown who said nine times out of ten changing the solenoid will fix the common problem. I was unlucky with mine they found two valves and two seals damaged in my own pump(injection services in Dublin did the re-con) . So now she is up and running fine again. Definitely recommend changing the solenoid first if anyone experiences any sudden loss of power.

aleeee53

hi everyone.i have nissan almera 01.and its 1.6 petrol engine.problom is its reving up and down on idling and wen i stop somewhere engine just go off.i have replaced.air flow meter.rpm sensor.and camshaft sensor..any ideas?

pajo1981

Three people, all from the london area, created accounts just to respond to this thread

I would elaborate but I am getting cosmetic surgery done on my nose (due to an accident involving P009384).

Thanks you and bye.

tinofapples

This sounds like just the same issue I'm having with newly acquired X-trail 2.2. Have it going to Nissan tomorrow morning for diagnostics test.

magicjj5

I would think it likely that it is as the motor used in your x-trail is exactly the same, If I was to offer any advice I would recommend using a 2nd opinion from a trusted diesel specialist as nissan dealers offer an injection pump replacement as the preferred course of action to remedy this fault. With the cost of these pumps above E1000 a diesel specialist will probably opt to replace the fuel PSV solenoid first and then re-con the pump to solve the fault if necessary. This is a more cost effective strategy in my opinion and the results with my almera have been excellent.

tinofapples

magicjj5 wrote: »

I would think it likely that it is as the motor used in your x-trail is exactly the same, If I was to offer any advice I would recommend using a 2nd opinion from a trusted diesel specialist as nissan dealers offer an injection pump replacement as the preferred course of action to remedy this fault. With the cost of these pumps above E1000 a diesel specialist will probably opt to replace the fuel PSV solenoid first and then re-con the pump to solve the fault if necessary. This is a more cost effective strategy in my opinion and the results with my almera have been excellent.

Thanks,
I'll throw it into Nissan tomorrow morning and see what they say. I'll have a chat with my local mechanic after that and see what he says and may decide to go down the route you recommend, someone like this I guess:

http://www.dieselinjectionservices.ie/index.html

Ideally I'd prefer to get someone closer, Galway,Roscommon or Athlone areas. Any recommendations here ?

David.

magicjj5

No worries, I found this after a quick search :
Loughrea Diesel Injection Services
Address: Carramore Loughrea Co. Galway
City of Galway
Phone: (091)841693
Categories: Diesel Engineers,

Anyone who deals with common rail diesels and modern ECUs should pursue this fault in a cost effective manner I believe that renault/nissan 2.2dci motor is used in a good volume of vehicles and for this reason I believe you should be able to find someone familiar with this issue.

tinofapples

magicjj5 wrote: »

No worries, I found this after a quick search :
Loughrea Diesel Injection Services
Address: Carramore Loughrea Co. Galway
City of Galway
Phone: (091)841693
Categories: Diesel Engineers,

Anyone who deals with common rail diesels and modern ECUs should pursue this fault in a cost effective manner I believe that renault/nissan 2.2dci motor is used in a good volume of vehicles and for this reason I believe you should be able to find someone familiar with this issue.

Yeah had spotted that fella as well, first things first hear what Nissan have to say.

And thanks again BTW

tinofapples

Code 0089 its reading alright. Suggested remedy from Nissan replace the suction control valve. Agreed to get it done straight away, fingers crossed problem will be solved.

Engine management light will be another days work. Fella reckons the whole unit will have to replaced. Might suss out some electrical repairs service to see if led might be able to replaced. Failing that i'll have to source a secondhand unit. Nissan want €700 +vat :’(

darkslider

Exactly the same issue with my 05 Xtrail.
Let us know if replacing the SCV did the trick please?
When I get a chance I'm thinking I'll get nissan to do this.

tinofapples

darkslider wrote: »

Exactly the same issue with my 05 Xtrail.
Let us know if replacing the SCV did the trick please?
When I get a chance I'm thinking I'll get nissan to do this.

A week on now and thankfully in my case we've not experienced limp mode since. The Nissan mexhanic said after replacing it that it was perfect and with the exception of the dashlight needing repair or replacement shes pretty good alright.

Cost €355 which included diagnostics first then supply and fitting of new scv.

Hope that helps you somehow and you don't have bigger issues.

darkslider

tinofapples wrote: »

A week on now and thankfully in my case we've not experienced limp mode since. The Nissan mexhanic said after replacing it that it was perfect and with the exception of the dashlight needing repair or replacement shes pretty good alright.

Cost €355 which included diagnostics first then supply and fitting of new scv.

Hope that helps you somehow and you don't have bigger issues.

Ha! Me too mate and I'm glad to hear yer sorted.
Could I ask you, were you charged for a Fuel pump calibration or maybe 'Fuel system Learn'?
I can pick up a genuine Nissan SCV for about 200 and I'm pretty sure I can fit it myself. Obviously don't have the technology to re-calibrate the fuel pump.

tinofapples

darkslider wrote: »

Ha! Me too mate and I'm glad to hear yer sorted.
Could I ask you, were you charged for a Fuel pump calibration or maybe 'Fuel system Learn'?
I can pick up a genuine Nissan SCV for about 200 and I'm pretty sure I can fit it myself. Obviously don't have the technology to re-calibrate the fuel pump.

There was defo a recalibration or as the girl called it reprogramming. I'm all for saving money beieve me but I think you're as well off going to Nissan when you consider the computer dictates the performance of the car.

The rough breakdown of my charge was €55 for the initial diagnostic, the scv was somehwere in the region of €150 + vat and I guess the difference was labour and recalibration.

darkslider

I'm far from an expert on diesel engines so when I found what the SCV looked like I was determined to find it on the engine itself. Went looking last night, following things as logically as I could; fuel lines, to filter, to what I thought was the pump to the fuel rail to the injectors.... no sign. This was very frustrating. Looked on the net and no deal... you'd think that for the amount of people that are experiencing this issue, somone would have done a write up on it by now.

Not discouraged, today I continued my search with no success. Then I applied the old addage of 'The internet is great for general info, but rubbish for specifics', stuck 'YD22' into google, selected images and voila! up pops a lovely high res image of a Nissan/ Renault YD22 engine and sure enough there was the SCV, although not where I thought it was. :rolleyes:

Perhaps a diesel head could tell a petrol head (me), are there 2 or 3 pumps on a diesel fuel system? One in the tank, one post filter and one on the fuel rail?? Or what is the item that looks like a pump on the fuel rail?

For those of you would would like to know where the SCV is on your Nissan 2.2 diesel engine I've attached the image.... hands up if yer engine is this clean

geospon

Hi lads,
I have the same problem what Dougie99 described in his post, only I changed already SCV, nothing help, PUMP, nothing, sensor on RAIL, nothing, INJECTORS, nothing. Mechanic said that this will be a ECU, so I bought one yesterday and I am going to change it as soon as possible. But If this will not help, dose somebody know garage where I can do this recalibration of the pump in Ireland (Dublin or around). I spent already enough money and problem still not sorted!!! Please advice me.

Regards.

geospon

here you have great post how to change SCV if you need it
http://www.nissan-navara.net/viewtopic.php?f=47&t=25685

darkslider

@ Geospon:
Did you get the SCV/ fuel pump calibrated and get a 'learn' done on the ECU when you had them replaced?
This is pretty essential to get the fuel delivery correct otherwise the fault will continue no matter what you replace.
Any nissan dealer will do this for you as they're obliged to have the software in house. Most non dealer mechanics won't invest this much money in brand specific vehicle software, so they won't have done the learn.

I think it costs about 90 euro.

geospon

darkslider wrote: »

@ Geospon:
Did you get the SCV/ fuel pump calibrated and get a 'learn' done on the ECU when you had them replaced?
This is pretty essential to get the fuel delivery correct otherwise the fault will continue no matter what you replace.
Any nissan dealer will do this for you as they're obliged to have the software in house. Most non dealer mechanics won't invest this much money in brand specific vehicle software, so they won't have done the learn.

I think it costs about 90 euro.

No I didn't my mechanic said that is not necessary But I will let him change the computer and next step I am going to Nissan for calibration. This is exactly 90+VAT

darkslider

Let me know how it goes for you. I was going to change the SCV myself but I don't have the time or the ramp to get access. Nissan can get the part cheaper than I can, so I'll just get them to do it on the Xtrail for me.
For the sake of about 50-60 in labour costs it's probably worth it.

darkslider

Finally got around to booking the Xtrail in to get the SCV replaced. Nissan wanted to faff about doing diagnostics etc. to determine the casue of the issue but I was adiment that it was the SCV valve and told them to replace the valve and do the fule pump learn.
That came to €360 -> 160 for the part, 90 for the fuel pump learn and 60 for labour, plus the VAT.

The Xtrail is a different machine!! What a transformation! I have Torq!!!
The engine is no longer hunting on the revs when idol, it sits solid at between 850 and 900 rpm. It's soooo much quieter and seems like the engine is putting far less effort into travelling up through the gears.

Thanks to Boyne Cars in Drogheda. They did exactly as I asked and gave me the price up front. Result!

tinofapples

darkslider wrote: »

Finally got around to booking the Xtrail in to get the SCV replaced. Nissan wanted to faff about doing diagnostics etc. to determine the casue of the issue but I was adiment that it was the SCV valve and told them to replace the valve and do the fule pump learn.
That came to €360 -> 160 for the part, 90 for the fuel pump learn and 60 for labour, plus the VAT.

The Xtrail is a different machine!! What a transformation! I have Torq!!!
The engine is no longer hunting on the revs when idol, it sits solid at between 850 and 900 rpm. It's soooo much quieter and seems like the engine is putting far less effort into travelling up through the gears.

Thanks to Boyne Cars in Drogheda. They did exactly as I asked and gave me the price up front. Result!

Seems about right. €355 i was charged.

geospon

My nightmare almost finished. I visited today Nissan service in Talaght (windsor.ie) and they sort out my problem by recalibrating fuel pump for €51.08 including VAT (it was just half hour of work). I highly recommend them. REMEMBER that after changing SCV you HAVE TO recalibrate it.
Last thing is to get back my money from really fraudulent part seller who sold me faulty ECU and doesn't want to refund it!

darkslider

I can't believe they're trying to sting you for a full ecu - I've only ever heard of that happening once and never on a Japanese car. Having said that the Xtrail is a japanese car with a renault engine in it..... go figure.
Also got a crowd in the North to build me a reinforced intercooler cos the one in the Xtrail was rubbish and leaking badly. It's not even welded on the seams, just crimped. Now it's re-cored, and heavy welded at each end with reinforced piping. A sweet upgrade for about 200 euro.

geospon

Lads, I want to make you aware of the guy who can fix your engine problems with Navara and Pathfinder. He put his ad on gumtree as a ‘nissan nevera engine problems‘. He will contact you with Peter who’s garage is close to Kill village beside the river. He will diagnose your problem as pump difficulties which he can obviously replace much cheaper than Nissan authorised service, later he will change injectors and suggest computer problems. Obviously, this will be some simple thing like my recalibration for which I paid with Nissan €50 but he will earn his part.

darkslider

Not sure I completely get this....
So your saying that the guy is just using 2nd hand parts that he has removed from broken Navara's/ Pathfinders?
Always best to use people who you hear of through 'Word of mouth' or through Feedback on a forum, never just some randomer who's ad is posted on the internet. You'll only end up getting reemed.

If in doubt, go to the main dealer, sure you pay high prices but for a lot of these alley way mechanics you'll end up paying more in the long run.

Flaco

Just in case anyone comes across this thread, I'm posting up my own experience relating to a 2005 2.2dci (Nissan) in an Almera Tino with 123,000 miles on the clock.

The car has just developed the fault (will randomly down-regulate the power output so that I can barely get it to power above 2,000rpm). Switching off and restarting sometimes clears it. Had a mechanic look at it and the first thing that occurred to him is that at 100,000+ miles the injectors are almost certainly getting worn. They are £250-300 each before VAT and fitting, which effectively makes the car a mechanical write-off, and that's before taking into account the costs of supplying and fitting a new fuel pump in conjunction.

He had a another guy who is familiar with the dci's and he suggested that simply replacing the pump alone might resolve the issue... but no guarantees, so could be throwing good money after bad.

So, the option of just replacing the Suction Control Valve (SCV) and recalibrating it to synchronize with the ECU seems like a relatively sensible punt before completely writing it off.

Have to say, though, that it has dented my confidence in Nissan, especially in view of other problems we've had with it together with those my brother-in-law experienced with his X-Trail.

darkslider

Hey mate,
Sounds like the exact symptoms of the failing SCV valve. This is a known fault on YD22 Renault (Yes, renault) engine so I'm surprised your Dci guy didn't suggest getting the SCV done. What gets me is the advice that's given on how to remedy this issue..... most of the posts in this thread and indeed my own experiences point to mechnics and Nissan technicians esssentailly 'feeling around in the dark' as to what to do about this and then they decide it gonna be a €1000+ euro repair for new injectors, diesel pump, ecu or similar.

A sudden drop in power like this generally points toward a fuel system issue, so, wouldn't the logical approach be to start with the simple, inexpensive items before jumping in and replacing major engine components. First things first.... fuel filter - Given that fuel quality these days in most garages is atrocious, changing the diesel filter is always a good place to start. OK it didn't fix the issue but the filter was manky so it wasn't helping. Some fuel treatment couldn't hurt either. The next most modular part would be the SCV. The part is about 200 to 280 depending on the year of manufacture of the engine (earlier engines have 2 pieces to replace, later just the one), the trouble is that even if you are competent enough to fit this yourself (it's in a pretty awkward spot) you HAVE to get nissan to do a re-learn on the fuel pump which is another 100 euro. So that's up to 400 to get it done. Pricey, but a lot less than throwing a grand at new injectors or more at a pump.

Mar4ix

was reading this thread just out of curiosity , as i dont have diesel nissan car, just for my own learn, found thread with ecu adapting. read here
with not bad results. ill copy/paste here in case that thread go vanish.

there is number people which got sorted by this procedure, numbers didn't had any changes.

************************************
To carry out the reset carry out the following

Turn ignition on so all dash lights come on.

Wait 3 seconds

PUMP accelerator pedal 5 times within 5 seconds....

with foot now OFF accelerator wait 7 seconds...

After 7 seconds press and hold down accelerator pedal for 10 seconds...

After 10 seconds the Engine Management Light will start to flash, at this point remove foot from accelerator.

the Nav is now in diag mode, so let the EML flash for a bit. the press and hold the accelerator pedal down for more than 10 seconds..this will then reset ECU and fuel pump etc......and put them into learning mode.

NOTE: When the EML light is flashing, this is listing possible fault codes... so if you know how to read the fault codes or know the sequences then you can figure out any possible faults with your Nav with out getting the dealer to do it!!

****************************************

darkslider

Be careful with reseting the fuel pump yourself. The learn takes a little while and if the car goes into limp mode while the learn is happening you'll be stuck in limp mode, IE switching the ignition off/on will not fix it.
I have heard of a couple of instances in which resetting the fuel pump did work though. I think the dealership charge about 90 euros to do this.

In the case of my Xtrail it was definitely the solenoid on the SCV that was the problem, it was getting stuck. I asked them to give me the old part following the change so I could take a look at it.

Flaco

Cheers Darkslider - I agree with what you say, but the guys were thinking more in terms of writing the thing off because they are worried that I'm going to start chucking money at it. I can see where they're coming from, but I can talk the missus into the 400 quid punt, because if it works, then happy days, and if not, it's worth spending that to justify finally writing the thing off altogether. It shocks me to think that at current prices, I might end up writing the wagon off over something like this - 123k miles is nothing for a diesel in my view. Bonkers.

darkslider

Flaco wrote: »

Cheers Darkslider - I agree with what you say, but the guys were thinking more in terms of writing the thing off because they are worried that I'm going to start chucking money at it. I can see where they're coming from, but I can talk the missus into the 400 quid punt, because if it works, then happy days, and if not, it's worth spending that to justify finally writing the thing off altogether. It shocks me to think that at current prices, I might end up writing the wagon off over something like this - 123k miles is nothing for a diesel in my view. Bonkers.

Agreed on all counts.
If you take it to the dealer get a quote before hand. Don't let them sting you diagnostics etc. Just tell them you want the SCV valve changed and the re-learn done. If the guy in the service department trys to convince you it could be something else and that they should check this that and the other (and they do), tell him its throwing a P0089 error so it's being starved of fuel - that would suggest that the SCV is not working.

Flaco

Thanks for that Darks, I'll follow your advice (once I finally get time to do it!) and get back on here to update the thread.

Many thanks for your help, much appreciated.