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Discussion Starter #1
The Exhaust Inspection System Light has just come on on my car.
It has done 38,600 miles.
I have had the car since Feb 17 and had no problem with it.
It has had the fix.
Over the last few days i have noticed regen when turned off, i have also had 3 journeys of approx 120 miles each in the last week, so not just local trips.

Can i ask what is the problem?
What is the solution?
Possible cost?

The probable answer i will get is "the fix" but if so can more detail as to what has happened please.
 

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As you mention there is a strong possibility something has failed that might have been affected by the emissions modification. When it was applied there would have been a certificate issued recording that it had taken place, and that as a trust building exercise Skoda would look "favourably" at any possible failures attributable to the software change for two years up to a maximum mileage of 150K miles.
Items covered are the egr, dpf, injectors, (and possibly others) if you do not have the certificate Skoda should be able to check if you are within the two year period. If it is possible that the problem is a result of the modification the repair should be F.O.C.

And no mention of the "F" word :smile:
 

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Discussion Starter #3
Thanks, yes i have had the letter giving the 2 year period or mileage.

The fix was done before i had the car, which is over 2 years ago.

I mentioned the regens, but it has always seemed to do a lot of them, but seemed much more the last week even after some good journies.

It does say to seek assistance from a specialised garage immediately

Also the system allows the car to run in emergency mode, but at the minute there is nothing wrong in the way its running.

I am not home until mid September so not able to get to my local garage (not skoda garage) to see if anything would come up on readout
 

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I had a similar problem, where there was the exhaust light on, no emergency mode and was running normally. Turned out to be a gunked-up throttle which they cleaned under the 2 year goodwill and they turned around one of the pipes to prevent it happening again (?).
 

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If it is the throttle position valve it is an item that Flintstone cleans regularly, hopefully he will be along soon.

The valve gums up which causes problems similar to yours. There is also a plastic cog that can loose teeth causing problems.

.
 

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Discussion Starter #6
Thanks, i could do with a bit of help.
Being away from home is a bit of a problem and i have no tools here, as the lad next door to me has a garage in the village and i use him. But there is a garage up the road from where i am and he only charged my daughter £5 to change the oil switch on her Corsa (i know a simple job, but many would rip customers off) so i may ask him if simple job.

I take it that it should clear the light when fixed?
 

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Hi Dutchman,

There are lots of different reasons that could cause the exhaust fault light to be lit. Probably counted in the dozens if truth known? Only getting the engine fault codes read would help narrow down the possibilities. Some of the cheap £8 Aldi/Ebay code readers can do that. One of the possibilities could be a sooted up throttle body unit, on the front of the engine. Clogging the operation of the throttle butterfly itself. As The Hood says, Since getting a clogged throttle body about 4 years ago, I do now remove it annually for a clean up and replace. I had read somewhere about the trick of reversing the EGR exit nozzle inside the inlet manifold. So at the clean in April this year I also removed the EGR delivery pipe and said exit nozzle and cleaned those of soot deposits too. Then reversed the nozzle when refitted.

I’ve just thought of a way I could write this up with pictures using the new forum’s Drag and drop facility. But have to dash off to pick up a new exhaust for the Fiat right now. I’ll try to find a time to create the write up when I get back.
 

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Henry, if you have problems with the pictures you could email them to me at the address below and I will insert hem for you. Just put a line of text where you want them such as throttle body pic 1 here.

.
 

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Discussion Starter #9
Hi Dutchman,

There are lots of different reasons that could cause the exhaust fault light to be lit. Probably counted in the dozens if truth known? Only getting the engine fault codes read would help narrow down the possibilities. Some of the cheap £8 Aldi/Ebay code readers can do that. One of the possibilities could be a sooted up throttle body unit, on the front of the engine. Clogging the operation of the throttle butterfly itself. As The Hood says, Since getting a clogged throttle body about 4 years ago, I do now remove it annually for a clean up and replace. I had read somewhere about the trick of reversing the EGR exit nozzle inside the inlet manifold. So at the clean in April this year I also removed the EGR delivery pipe and said exit nozzle and cleaned those of soot deposits too. Then reversed the nozzle when refitted.

I’ve just thought of a way I could write this up with pictures using the new forum’s Drag and drop facility. But have to dash off to pick up a new exhaust for the Fiat right now. I’ll try to find a time to create the write up when I get back.
Thanks for the reply and the write up.
My daughter who is with us is going home for the day on Wednesday and hopefully can pick up a code reader from my mate and i can then hopefully locate the fault.

Where do they plug in on the car?
 

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Into the OBD port which is in the panel below the steering wheel.
Indeed! The OBD socket/port is out of sight on the lower surface of the dash. Pointing downwards towards the floor. Between the steering column and the A-Pillar. Just above the driver's right ankle (in a RHD car). Almost rectangular in shape, roughly 15mm by 40mm. To accept a multi-pin plug - can't remember how many pins exactly, maybe 18-20? But cleverly shaped so the plug can only fit one way round.

Almost as if VW engineers didn't want you to find it. But were obliged by EU law to make it available. :wink:

All cars have them. Post late 90's / early 2000's. Hidden somewhere, usually within the cabin. Prior to that manufacturers each developed their own specific diagnostic ports. Usually in the engine compartment. My 1998 BMW had its own circular port in the engine bay. By the time of my first E46 2002 model, that had an OBD standard port in the dashboard.
 

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Ah Yes! The Yetis port point semi -backwards. It's the BMW's port in a similar location that points direct down:sad:
Did I say I hadn't checked?
16 pin? So I wasn't too far out on that guess?
 

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Discussion Starter #14
Thanks, i knew where it was on my old VW and had a quick feel in a similar place
 

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Discussion Starter #15
Just used code checker (Vgate scan VS450)
When turned on main menu had 4 sections; 1.VW/AUDI 2. OBDII/EOBD 3. OIL Reset 3. System Setup
On pressing 1..VW/AUDI and then (Select system) 01 Engine it ran and LINK ERROR came up.
I then pressed 2.OBDII/EOBD and it started to run and 1 Read Codes and 2 Erase codes came up
I pressed read codes and 5 codes came up P0672 (twice) Glow plug heater cylinder 2, P0674 (twice) Glow plug heater cylinder 4, and P0671 Glow plug heater cylinder 1

If i have done it correct i take it there are faults on 3 plugs and they need replacing?
 

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it is about time I purchased a OBD11 scanner so just checked the reviews on the Vgate VS450.

Sorry if this is a stupid question but is the VS450 for diesel vehicles/Yetis' or ok for petrol versions?
 

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If i have done it correct i take it there are faults on 3 plugs and they need replacing?
Sounds like it? We may all have been fooled by thinking the exhaust fault light may have been something actually to do with the exhaust.....:sad:

When I said there were dozens of reasons why the exhaust fault light may get illuminated? Revise that and insert “possibly 100’s.”

Next trick - try using the scanner to clear all codes. And see:
A) if that clears the fault light too?
B) how many (lights or codes) come back over the next couple of days running?

I had a light last October time, think that may have been the exhaust light come to think now? My cheapo £8 scanner from Aldi said that a code that translated by Google to a sticking vane in the variable pitch turbocharger? Mmmm? Cleared the code and threw a bottle of Archoil 6400 d-Max in the tank. Just before a trip from Yorkshire to Cambridge and back one weekend. Neither code nor light been seen since? (Bit like Ruari’s missing brain? Sorry, wrong thread. :grin:)

Never mind - it did cause me to get that write up completed about cleaning the Throttle Body unit. When I should have been working, last Sunday. :smile:

Which reminds me - must re-check what is causing my BMW to have a warning light about its ABS unit? Last time I checked it was a sticking valve in the ABS distribution block. Got to drive it back home from Lichfield to Yorkshire first though. The ABS may not be perfect. But that just means it reverts to conventional braking. I survived driving cars with no ABS at all for 35 out of 50 years. So not desperately worried. Will need to get it fixed before it’s MoT though. Used to be lit intermittently. Now it’s become permanent.
 
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Anyone changed the glow plugs on the diesel Yeti? Not needed to do ours in its first 212,000 miles so far. So have no first hand knowledge. They look reasonably accessible though? So long as not seized in the head? A friend with a 530d BMW, same engine as mine, had two glow plugs seize. The cyl head had to be taken off and sent to Germany to get them out without destroying the head. But the N57 engine is a bit known for that problem.

I did once have a glow plug light on my REN-Oh Scenic 1.9dCi. At around 80,000 miles. I did get as far as laying in a set of new plugs, as forums said the originals were only good for 30-40,000. Then the fault light cleared itself. The new glow plugs were still in the boot at 145,000 miles when I sold it to get the Yeti.
 

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Discussion Starter #19
it is about time I purchased a OBD11 scanner so just checked the reviews on the Vgate VS450.

Sorry if this is a stupid question but is the VS450 for diesel vehicles/Yetis' or ok for petrol versions?

Its not mime i borrowed it off a mate.

The box does say covers most VW's Audis sold world wide since 1990
 

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Discussion Starter #20
Sounds like it? We may all have been fooled by thinking the exhaust fault light may have been something actually to do with the exhaust.....:sad:

When I said there were dozens of reasons why the exhaust fault light may get illuminated? Revise that and insert “possibly 100’s.”

Next trick - try using the scanner to clear all codes. And see:
A) if that clears the fault light too?
B) how many (lights or codes) come back over the next couple of days running?

I had a light last October time, think that may have been the exhaust light come to think now? My cheapo £8 scanner from Aldi said that a code that translated by Google to a sticking vane in the variable pitch turbocharger? Mmmm? Cleared the code and threw a bottle of Archoil 6400 d-Max in the tank. Just before a trip from Yorkshire to Cambridge and back one weekend. Neither code nor light been seen since? (Bit like Ruari’s missing brain? Sorry, wrong thread. :grin:)

Never mind - it did cause me to get that write up completed about cleaning the Throttle Body unit. When I should have been working, last Sunday. :smile:

Which reminds me - must re-check what is causing my BMW to have a warning light about its ABS unit? Last time I checked it was a sticking valve in the ABS distribution block. Got to drive it back home from Lichfield to Yorkshire first though. The ABS may not be perfect. But that just means it reverts to conventional braking. I survived driving cars with no ABS at all for 35 out of 50 years. So not desperately worried. Will need to get it fixed before it’s MoT though. Used to be lit intermittently. Now it’s become permanent.
I will try and clear the codes then and see if it will clear the light.
I have the scanner for at least a week, so can try a couple of times/things
 
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