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

Question type: Maintenance & Repair

1 Answer

3,705

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

Add photo

Related Questions

Search Audi Q5 Questions

Audi Q5 Experts

#1 cliffordcousa
cliffordcousa
Reputation 30
#2 Goodthaimer
Goodthaimer
Reputation 20
#2 T_S_T
T_S_T
Reputation 20
View All

Related Models For Sale

Used Audi Q7
100 Great Deals out of 4,516 listings starting at $4,700
Used BMW X5
478 Great Deals out of 14,980 listings starting at $1,499
Used BMW X3
315 Great Deals out of 12,893 listings starting at $2,500
Used Audi A4
295 Great Deals out of 10,641 listings starting at $1,200
Used Lexus RX 350
310 Great Deals out of 20,892 listings starting at $5,795
Used Audi A6
139 Great Deals out of 6,224 listings starting at $2,177
Used Jeep Grand Cherokee
1,069 Great Deals out of 73,682 listings starting at $1,200
Used Acura MDX
280 Great Deals out of 17,733 listings starting at $1,900
Used Acura RDX
185 Great Deals out of 11,947 listings starting at $3,495
Used Porsche Cayenne
125 Great Deals out of 5,057 listings starting at $3,999
Used Mercedes-Benz GLK-Class
108 Great Deals out of 3,421 listings starting at $7,990
Used BMW 3 Series
1,021 Great Deals out of 31,286 listings starting at $975
Used Mercedes-Benz M-Class
215 Great Deals out of 5,652 listings starting at $1,500

Used Cars For Sale

2018 Audi Q5 For Sale
2,588 listings starting at $42,502
2017 Audi Q5 For Sale
16 Great Deals out of 672 listings starting at $34,777
2016 Audi Q5 For Sale
17 Great Deals out of 640 listings starting at $29,895
2015 Audi Q5 For Sale
23 Great Deals out of 615 listings starting at $24,991
2014 Audi Q5 For Sale
41 Great Deals out of 742 listings starting at $15,500

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.