What does engine light code. Air injection System flow/psi. Sensor bank 1 : short to ground mean on a 2009 Q5 audi? Or some clue as to what i should check. Thanks.

Asked by Sep 08, 2015 at 06:59 PM about the 2009 Audi Q5 3.2 quattro Premium AWD

Question type: Maintenance & Repair

1 Answer


Potential causes include: Faulty exhaust manifold check valve A fuse or relay for the secondary air injection pump may be faulty A faulty air pump Leaking vacuum hose A bad vacuum control switch A dislodged a vacuum line A leak in the hoses/piping between the secondary air injection pump and the Combi or secondary air injection A sensor for the secondary air pressure may be faulty The combi valve itself is faulty The secondary air injection port in the cylinder head may be plugged with carbon The secondary air injection ports in the cylinder head may by clogged

1 of 1 people found this helpful.

Your Answer

Audi Q5 Experts

  • #1
  • #1
  • #1
View All

Related Models For Sale

Used Audi Q7
131 Great Deals out of 6,109 listings starting at $5,995
Used BMW X5
332 Great Deals out of 15,469 listings starting at $3,495
Used BMW X3
256 Great Deals out of 9,199 listings starting at $2,648
Used Audi A4
309 Great Deals out of 12,414 listings starting at $1,899
Used Lexus RX 350
489 Great Deals out of 20,459 listings starting at $3,900
Used Jeep Grand Cherokee
1,029 Great Deals out of 71,592 listings starting at $1,195
Used Audi A6
174 Great Deals out of 7,550 listings starting at $1,200
Used Acura MDX
460 Great Deals out of 16,256 listings starting at $2,000
Used Acura RDX
243 Great Deals out of 11,599 listings starting at $4,400
Used Mercedes-Benz M-Class
300 Great Deals out of 6,302 listings starting at $2,400
Used Volvo XC60
153 Great Deals out of 6,525 listings starting at $6,995
Used Porsche Cayenne
114 Great Deals out of 5,132 listings starting at $4,900
Used Audi A5
92 Great Deals out of 4,602 listings starting at $8,250

Used Cars For Sale

2018 Audi Q5 For Sale
8 Great Deals out of 5,183 listings starting at $39,000
2017 Audi Q5 For Sale
29 Great Deals out of 603 listings starting at $29,999
2016 Audi Q5 For Sale
17 Great Deals out of 574 listings starting at $26,430
2015 Audi Q5 For Sale
38 Great Deals out of 963 listings starting at $21,991
2014 Audi Q5 For Sale
34 Great Deals out of 620 listings starting at $15,991

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.