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Model Year 24/25 Help - Engine warning symbol and Front assist warning.

Delanor

Active Member
Aug 9, 2022
138
48
My 11k mile VZN Formentor has just thrown up a "Fault in the Emissions Control System" engine warning lamp on the right hand side of the dash and the "Front Assist unavailable" warning is on as well in the middle.
Anyone know what this is all about - I haven`t got my Launch OBD11 code reader as my brother hasn`t returned it yet and he lives 50 miles away!
 

Delanor

Active Member
Aug 9, 2022
138
48
Its code P006800 which is the MAP or MAF sensor I`ll give em a clean first if its not that then its the dealers problem!
 

Delanor

Active Member
Aug 9, 2022
138
48
Well this a new one on me, so I had the check engine lamp come on the code was P0068, now I could have cleared the code with my code reader but I decided to re-cycle the ignion a few times to see if that would clear it and after 7 times the warning had gone, it stayed off for a couple of days but came back on so I tried it again and cleared the warning but again it returned after a couple of days.

So into the local Cupra dealer it went and they soon found the fault, now I recently had my VZN serviced by a different dealer but the same company they should have used 0w 30 oil but used 5w 30 oil instead telling me they are the same oil (no they are not) I complained to Cupra customer service and they came back with the same answer that 5w 30 oil was OK by VAG to use.

Now my local dealer said when my VZN was serviced (they could see on the service record it was a different dealer same company ) someone had spilt the oil at the filler and so they had cleaned the filler tube and filler cap of oil as apparently it was affecting a sensor (this is a new one on me) anyway the fault appears to have gone but I will have to keep my eye on it for a few days in case they have just cancelled the fault as I wouldn`t put it past them to do that!

I pointed out to the dealer service assistant about the fact 5w 30 oil had been used and he said they only used that on older vehicles on new vehicles they use 0w 30 as it improves petrol consumption in fact they had done the first service and had used 0w 30 oil!

Anyway can anyone confirm that the Formentor engine oil filler and surrounding area if wet with oil can change the emission pressure I guess and light the check engine lamp as a fault!

As I said that is a new one on me but is it possible that it could be what has happened as apparently even a loose petrol filler cap can put the check engine light on!

Any offers!
 

James_R

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Apr 22, 2008
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The P0068 code can be induced by not putting the oil filler cap back on correctly, it causes a drop in crankcase pressure that the ECU deems as an internal air leak.
 

Delanor

Active Member
Aug 9, 2022
138
48
The P0068 code can be induced by not putting the oil filler cap back on correctly, it causes a drop in crankcase pressure that the ECU deems as an internal air leak.
That I would go with but I would have thought fitting the oil cap was fairly fool proof, the dealer is saying it was oil that was spilt around that area and that was affecting a sensor I don`t know if that was the MAP or MAF sensor I don`t see that unless oil actually got in a sensor electrical connector.
I once had my RX-8 serviced by a Mazda dealer which included a gearbox oil change a few days later it went for its MOT and it got an advisory for a gearbox oil leak, when I checked the gearbox the Mazda "Technician" hadn`t bothered to clean the oil off the bottom of the box when it was drained!

I just had a look at the oil filler and it has got a new cap on it so what was that all about - whoever serviced it last had spilt oil!

Go figure!
 
Last edited:

James_R

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Staff member
Moderator
Apr 22, 2008
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Manchester
On the 2.0TSI engine you can quite easily screw the cap on incorrectly.

The MAP sensor is nowhere near the filler cap and they don't have a MAF sensor...
 

Delanor

Active Member
Aug 9, 2022
138
48
On the 2.0TSI engine you can quite easily screw the cap on incorrectly.

The MAP sensor is nowhere near the filler cap and they don't have a MAF sensor...
I just had a look at the oil filler and it has got a new cap on it mine was yellow now its black which has just been fitted at the latest dealer - they never mentioned that so what was that all about - whoever serviced it last had spilt oil!

Go figure!