Code p2177 popped up at emission test what does this mean ?
this system is to lean bank 1 you need to turn up the fuel
real common to get a vacuum leak. check vac hoses and pcv valve. MAF ,o2 sensors, fuel filter also possibilities, but I would check simple things first. how long since last tuneup?
Search Volkswagen Jetta Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
Volkswagen Jetta Experts