Intermittent EPC events V6 3.2L - T1 2005 - Club Touareg Forums
Thread Tools Display Modes
post #1 of 1 Old 05-16-2016 Thread Starter
Touareg Mechanic
G6mdxvct's Avatar
Touareg: 2005 V6
Join Date: Feb 2014
Location: USA
Second Vehicle: VW 2
Posts: 535
Thanks: 0
Thanked 12 Times in 12 Posts
Intermittent EPC events V6 3.2L - T1 2005

I have had intermittent EPC events, sometimes limp mode sometimes lower performance for about 6 months. CEL was either one of the redundant sensors in the TB or both (limp mode). When temp was lower than 45F never happened would occur more frequently when above 50F. The TB is not even a year old so doubted the sensors were a problem. Thought it might be the wiring and replaced. No change in behavior. Changed the oxygen sensors before the CAT. Car ran better less frequent events and then only angle sensor G188. Changed the sensors after the CAT. Problem has gone away.

Neither of the Oxygen sensors indicated an issue or resulted in a CEL. If the ECM does not get a signal from the precat oxygen sensor will cause an emergency running mode based on engine character map but would expect a CEL concerning the oxy sensor not the TB angle sensors and EPC only.

Main point if you have similar issues might not actually be your throttle body. Did check precat aging and it was less than 0.80 which is substantively less than new 1.99. The learned values were OK. Could not find anything unusual on post CAT sensor.
G6mdxvct is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Club Touareg Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

For the best viewing experience please update your browser to Google Chrome

VW Touareg News Delivered to your Email!

Stay up-to-date with Touareg news in your inbox.

unsusbcribe at anytime with one click

Close [X]