MIL light on every 2 weeks

Asked by Oct 17, 2014 at 07:42 AM about the 2009 Volkswagen CC Sport

Question type: Maintenance & Repair

Hi, I have a 2009 CC sport which I absolutely love. MIL light goes on every 2 weeks with codes P0171 : $07E8 every time. The problem first started last year, when I took it to the dealer, who changed fuel pump, the problem resolved for few days. Since this time I have been using the Shell's highest price gas. MIL showed up again, when I was told there is carbon deposition and asked to use the fuel injector cleaning for 3 full fuel tanks. MIL came back on, this time dealer said, they would have to go in manually and clean up the carbon, which I got it done. Later the MIL came back again in 2 months, since than I have paid a visit to the dealer about 3-4 times with MIL, which comes on for me but they cannot reproduce the same and cannot find any problem with the car.

At this point, MIL comes on once ever 1-2 days with the P0171 : $07E8 code, car runs fine. MIL clears by next day. Please suggest what could be the problem, do I need to worry about this?

1 Answer

150,815

http://www.obd-codes.com/p0171 Faulty signal from O2 sensor, BUT does NOT mean O2 sensor is bad. Read up at that site for causes and solutions. Un-metered air ..vacuum leak...MAF sensor...many others.

Your Answer

Add photo

Related Questions

  • what maintenance is needed when mileage 51,250 is reached? 9 answers

    the check engine came on - vehicle has been driving fine - im not sure if it means its needing a maintenance check

    2011 Volkswagen CC

    -

    Maintenance & Repair

  • My 09 VW CC check engine light is on 2 answers

    Hi, My check engine light was on April and I went to the VW dealer to check it. It said I need to change the Thermostat and Throttle body repair, which would cost me over 1200. I think that 's too e...

    2009 Volkswagen CC Luxury

    -

    Maintenance & Repair

  • My car won't start 1 answer

    I just used my car last night and this morning it won't come on. I have to press the break to start the car but the break is real stiff and won't go down to start the car. Car turns on but the engi...

    2012 Volkswagen CC

    -

    Maintenance & Repair

  • 2010 VW CC electrical issues 1 answer

    Two weeks ago, my trunk stopped opening from any mechanism other than the manual emergency latch inside the trunk. There appears to be a short between the electric trunk release and the right rear ...

    2010 Volkswagen CC Sport

    -

    Maintenance & Repair

  • EPC light came on and lost all power a week ago, having strange problem now. Help please! 58 answers

    about 1 week ago while I was driving on the freeway my EPC light came on and I had to pull onto the shoulder as I lost all acceleration. After restarting the car I got off the freeway ok (did notice a...

    2003 Volkswagen GTI 1.8T

    -

    Maintenance & Repair

Search Volkswagen CC Questions

Volkswagen CC Experts

#1 Deathjam4
Deathjam4
Reputation 350
#1 johnsok
johnsok
Reputation 350
#3 Jodebg
Jodebg
Reputation 170
View All

Related Models For Sale

Used Volkswagen Passat
160 Great Deals out of 21,289 listings starting at $1,500
Used Volkswagen Jetta
341 Great Deals out of 33,302 listings starting at $700
Used BMW 3 Series
1,017 Great Deals out of 34,833 listings starting at $900
Used Audi A4
199 Great Deals out of 10,876 listings starting at $1,333
Used Honda Accord
704 Great Deals out of 81,926 listings starting at $500
Used Volkswagen GTI
91 Great Deals out of 5,719 listings starting at $2,508
Used Mercedes-Benz C-Class
537 Great Deals out of 30,472 listings starting at $1,500
Used BMW 5 Series
490 Great Deals out of 14,472 listings starting at $1,375
Used Nissan Maxima
266 Great Deals out of 25,822 listings starting at $2,545
Used Dodge Charger
248 Great Deals out of 27,238 listings starting at $1,997
Used Toyota Camry
829 Great Deals out of 90,858 listings starting at $1,300
Used Audi A6
119 Great Deals out of 6,699 listings starting at $950
Used Nissan Altima
776 Great Deals out of 76,997 listings starting at $470
Used Ford Mustang
316 Great Deals out of 45,523 listings starting at $2,000
Used Ford Fusion
962 Great Deals out of 79,012 listings starting at $1,000

Used Cars For Sale

2017 Volkswagen CC Sport For Sale
609 listings starting at $25,660
2016 Volkswagen CC Sport For Sale
118 listings starting at $19,988
2015 Volkswagen CC Sport For Sale
16 listings starting at $18,495
2014 Volkswagen CC Sport For Sale
19 listings starting at $14,856
2013 Volkswagen CC Sport For Sale
46 listings starting at $9,691