2003 Volkswagen Passat Code PO456 : EVAP Leak Small

Tiny
ITSKEVN007
  • MEMBER
  • 2003 VOLKSWAGEN PASSAT
  • 1.8L
  • 4 CYL
  • TURBO
  • AUTOMATIC
  • 160,000 MILES
Can this code/issue affect engine performance and what are possible solution to this?
Saturday, May 24th, 2014 AT 1:28 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,176 POSTS
This shouldn't have an affect on the performance. However, it is an emissions concern. There is a small leak in the EVAP system which is setting this code. What I recommend to have done is a smoke test. Basically, a mechanic will inject smoke into the EVAP system at a very low pressure. Where the leak is located, the smoke will come out. These are usually very hard to find without doing this procedure.
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Saturday, May 24th, 2014 AT 6:45 PM

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