S4 / RS4 (B5 Platform) Discussion Discussion forum for the B5 Audi S4 & RS4 produced from 1998-2002

Bad MAP? 16621 Manifold Pressure/Boost Sensor (G31) Signal too low code

Thread Tools
 
Search this Thread
 
Old 08-02-2009, 11:53 AM
  #1  
AudiWorld Senior Member
Thread Starter
 
QuiksilverS4's Avatar
 
Join Date: Mar 2002
Posts: 1,976
Likes: 0
Received 0 Likes on 0 Posts
Default Bad MAP? 16621 Manifold Pressure/Boost Sensor (G31) Signal too low code

16621 Manifold Pressure/Boost Sensor (G31) Signal too low code when MAP is plugged in.

Signal too high when MAP is unplugged.

Can anything other than bad MAP sensor cause this??
Old 08-02-2009, 01:10 PM
  #2  
AudiWorld Super User
 
complacentsee's Avatar
 
Join Date: Jul 2005
Posts: 2,042
Likes: 0
Received 4 Likes on 2 Posts
Default

Do you have vag com your using to scan these codes. I would log them and see if something funky is going on.
Old 08-02-2009, 01:24 PM
  #3  
AudiWorld Senior Member
Thread Starter
 
QuiksilverS4's Avatar
 
Join Date: Mar 2002
Posts: 1,976
Likes: 0
Received 0 Likes on 0 Posts
Default

Pulled codes with old copy of vag com. Will be trying to log later today.

Currently can't clear the code, have check engine light, only boosting to about 5 lbs (limp mode?) and car hesitates and bucks if given sudden throttle input.
Old 08-02-2009, 03:16 PM
  #4  
AudiWorld Super User
 
complacentsee's Avatar
 
Join Date: Jul 2005
Posts: 2,042
Likes: 0
Received 4 Likes on 2 Posts
Default

Sorry, I totally skipped over the 16621 while reading...
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
jeffkruse
A8 / S8 (D3 Platform) Discussion
6
12-16-2021 05:59 PM
eggsngrits
A8 / S8 (D3 Platform) Discussion
4
12-08-2021 06:58 PM
anticsAK
A8 / S8 (D2 Platform) Discussion
0
09-04-2015 09:59 PM
CPLYONS
A8 / S8 (D3 Platform) Discussion
3
09-03-2015 07:04 PM



Quick Reply: Bad MAP? 16621 Manifold Pressure/Boost Sensor (G31) Signal too low code



All times are GMT -8. The time now is 10:31 PM.