VW Fault Code 17916

[tariqb]

I have the following code come up on the code reader:

17916 -Idle System Learned Value- Upper limit reached (P1508)

What does this mean - where is the problem and what needs replacing?

This fault may explain why my economy levels are so low. Any advice would be appreciated.

[Rhyso]

http://wiki.ross-tech.com/index.php/17916/P1508/005384

[tariqb]

still a little confused as to what would need replacing - air intake? - well that could be the MAF or the Intake manifold or another 1000 things!! can any oneone make this make sense.

[Rhyso]

still a little confused as to what would need replacing - air intake? - well that could be the MAF or the Intake manifold or another 1000 things!! can any oneone make this make sense.

or it could be the air intake behind the passenger headlight or it could be the filter............

i'd start at the front of the air intake system and work backwards.............

[dai-cymru]

yeah as rhyso says start from behind the headlight, should be quite easy to fix, wouls suspect the air filter itself clogged up

[tariqb]

just got it serviced last week - new air filter was put in as well as the usual stuff - pollen filter etc  - tips on how to do it would be fab-