ENGINE MANAGEMENT/EMISSION WARNING LAMP

Faults and Technical chat for the new Volkswagen Tiguan
xtrailman
Posts: 773
Joined: Mon Jul 16, 2018 3:16 pm

Re: ENGINE MANAGEMENT/EMISSION WARNING LAMP

Post by xtrailman » Wed Jul 31, 2019 4:08 pm

Adblue is for nox etc so I don't see how it can affect MPG.
2019 SEL 190ps diesel.


ZaheerUK
Posts: 66
Joined: Thu Apr 04, 2019 8:20 pm

Re: ENGINE MANAGEMENT/EMISSION WARNING LAMP

Post by ZaheerUK » Wed Jul 31, 2019 4:46 pm

My mpg for a motorway run has dropped by 8/9 mpg. Same route - similar weather and driving style/speed. Last week I was easily averaging 52.1 mpg on a 40 mile run and now I'm getting 43.4mpg. Thats why I'm wondering if its related.
VW Tiguan R Line Tech DSG 2.0 TDi DSG White
13/03 - S1 - Processing
26/03 - S2 - With Factory
30/05 - S3 - BWC
27/06 - S5a - Transit
03/07 - S5b - Shipped
05/07 - S5c - Near UK
09/07 - S6 - Arrived in UK
15/07 - Collected!!


CNC
Posts: 1289
Joined: Mon Oct 16, 2017 5:59 pm
Location: South West UK

Re: ENGINE MANAGEMENT/EMISSION WARNING LAMP

Post by CNC » Wed Jul 31, 2019 6:53 pm

ZaheerUK wrote:
Wed Jul 31, 2019 4:46 pm
My mpg for a motorway run has dropped by 8/9 mpg. Same route - similar weather and driving style/speed. Last week I was easily averaging 52.1 mpg on a 40 mile run and now I'm getting 43.4mpg. Thats why I'm wondering if its related.
It may well be related, or it could be another faulty sensor giving a false message to another component which in turn generates the alarm code you have. I'm sure once you dealer has fixed it the mpg will return to your previous figures.
2018 MY SEL 150 TDI DSG 2Motion in Caribbean Blue with reversing camera & park assist plus fully debadged


User avatar
Breezer
Posts: 400
Joined: Sun Mar 05, 2017 7:38 pm
Location: UK - Scotland

Re: ENGINE MANAGEMENT/EMISSION WARNING LAMP

Post by Breezer » Wed Jul 31, 2019 8:17 pm

Warmer weather means warmer air intake for the engine (less efficient), air con switched on with higher air vent fan speed and of course, potentially windows and/or sunroof open. All will affect fuel economy.
SEL 2.0 TSI 4WD DSG
Ruby Red+Area View with Park Assist +DCC +Electric Tailgate & Keyless Entry +Heated Windscreen +Wireless Charging +Tyre Monitor +Leather Seats
Ord: 20/02/17 | Built: 03/04/17 | Landed: 21/04/17 | Rec: 02/05/17


ZaheerUK
Posts: 66
Joined: Thu Apr 04, 2019 8:20 pm

Re: ENGINE MANAGEMENT/EMISSION WARNING LAMP

Post by ZaheerUK » Thu Aug 01, 2019 4:14 pm

CNC wrote:
Wed Jul 31, 2019 6:53 pm
ZaheerUK wrote:
Wed Jul 31, 2019 4:46 pm
My mpg for a motorway run has dropped by 8/9 mpg. Same route - similar weather and driving style/speed. Last week I was easily averaging 52.1 mpg on a 40 mile run and now I'm getting 43.4mpg. Thats why I'm wondering if its related.
It may well be related, or it could be another faulty sensor giving a false message to another component which in turn generates the alarm code you have. I'm sure once you dealer has fixed it the mpg will return to your previous figures.
So the car has been in at the dealers since yesterday.
Service guy rang me this morning to say that they will keep my car overnight as they need to take the windscreen off and re-wire something!
He couldn’t give me any more details but why on earth would they be taking off my windscreen for what seems to be an emissions issue . Perhaps related to active cruise as I did tell them that ACC sometimes doesn’t see car in front and accelerates towards it aggressively.

It a mystery. Anyone have any suggestions? Thanks in advance.
VW Tiguan R Line Tech DSG 2.0 TDi DSG White
13/03 - S1 - Processing
26/03 - S2 - With Factory
30/05 - S3 - BWC
27/06 - S5a - Transit
03/07 - S5b - Shipped
05/07 - S5c - Near UK
09/07 - S6 - Arrived in UK
15/07 - Collected!!


drivedrive
Posts: 5
Joined: Mon Jul 01, 2019 2:01 pm

Re: ENGINE MANAGEMENT/EMISSION WARNING LAMP

Post by drivedrive » Wed Aug 07, 2019 8:38 am

It was DPF differential pressure sensor that caused light to turn on in my case if it helps anybody ...


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