0 like 0 dislike
1.5k views
by

gas cap is always loose when fueling up

Vehicle: 2010 volkswagen cc 2.0 turbo

1 Answer

0 like 0 dislike
by (13.4k points)
P2187 Bank system too lean at idle,  can a gas cap loose cause this code? No. You have a lean air to fuel ratio. Lean air  to fuel ratio can be causes by a MAF (mass air flow) that is faulty or even a bit dirty, A MAF air flow cleaning may help, Vacuum leak can cause lean idle, Fuel pressure low or even a  partial clogged injector, Above all it may be time for a tune up, worn sparkplugs do cause lean air to fuel ratio,And if you have a faulty gas cap replace it,Fumes are gasoline also.

Related questions

0 like 0 dislike
1 answer 270 views
asked Feb 27, 2017 by Denny Here
0 like 0 dislike
1 answer 301 views
0 like 0 dislike
1 answer 334 views
0 like 0 dislike
1 answer 816 views

36.2k questions

32.2k answers

1.3k comments

22.8k users

Need A Repair Shop?
Find local automotive repair shops in your area.
Does your car have Safety Recalls? → Check here
...