A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

Where is the sensor that reads flow for the air injection pump

Thread Tools
 
Search this Thread
 
Old 03-10-2005, 04:37 AM
  #1  
Junior Member
Thread Starter
 
FatAuto's Avatar
 
Join Date: Jan 2003
Posts: 360
Likes: 0
Received 1 Like on 1 Post
Default Where is the sensor that reads flow for the air injection pump

I'm throwing a code for incorrect flow from the secondary air injection pump. Does anybody know what sensor reads that condition?
Old 03-10-2005, 06:53 AM
  #2  
Junior Member
Thread Starter
 
FatAuto's Avatar
 
Join Date: Jan 2003
Posts: 360
Likes: 0
Received 1 Like on 1 Post
Default I checked the vacuum valve, its good, and I hear a change in engine tone when

I plug the valve in, so I know at least one of the two valves (2.8) is opening. I'm think the pump is running, so I'm running out of ideas
Old 03-10-2005, 08:39 AM
  #3  
New Member
 
tech1's Avatar
 
Join Date: Mar 2005
Posts: 8
Likes: 0
Received 0 Likes on 0 Posts
Default Re: Where is the sensor that reads flow for the air injection pump

The car uses the 02 sensor the check secondary air flow. Usual cause is a vacuem leak to secondary air valves. Furthermore, any vacuem leak in the car can lead to insufficient vacuem to open the valves. If your vacuem lines are cloth covered they may very well be brittle and leaking.
Old 03-10-2005, 09:57 AM
  #4  
Junior Member
Thread Starter
 
FatAuto's Avatar
 
Join Date: Jan 2003
Posts: 360
Likes: 0
Received 1 Like on 1 Post
Default

Its just that the engine completly changes tone when I remove the vac line, so i think its working
Old 03-10-2005, 11:47 AM
  #5  
New Member
 
Zamore's Avatar
 
Join Date: May 2004
Posts: 448
Likes: 0
Received 0 Likes on 0 Posts
Default i read somewhere that the code could also mean a bad o2 sensor

i am getting the same code and i know my o2 sensor is failing.. when it warms up a bit i'll swap it out
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
J_A_J
2.7T V6 Discussion
1
12-25-2009 07:31 PM
mobaar
A4 (B5 Platform) Discussion
4
07-15-2009 03:54 PM
cparke
A4 (B5 Platform) Discussion
5
09-07-2008 08:53 AM
bschmidt1125
A4 (B5 Platform) Discussion
4
06-17-2008 11:20 AM
Stoney
A6 / S6 (C5 Platform) Discussion
1
09-10-2004 08:11 AM



Quick Reply: Where is the sensor that reads flow for the air injection pump



All times are GMT -8. The time now is 09:28 PM.