[V6-12v] Trouble code 2331

Nathan White natwhite at mnsi.net
Fri Dec 3 10:43:51 EST 2004

Check for a vacumn leak somewhere on those braided hoses. Better yet, 
replace all those little hoses. Vacumn leaks can cause 02 sensor codes.

Good luck,


Ron & Janet Frazier wrote:

> I have a 1993 100cs wagon and I have pulled the 2331 trouble code when 
> the check engine light came on.  I believe this code is for one of the 
> O2 sensors.  5 years ago the same thing happened.  they replaced both 
> o2 sensors and that didnot solve the problem.  They did a smoke test 
> and then replace the throttle body gaskets and the egr vale gasket.  
> Does anyone want to venture a guess as to what is really wrong with my 
> car this time.  Replacing gaskets is cheaper than O2 sensors.  The 
> problem is knowing which ones without a smoke machine.  Does anyone 
> have any guidance.  also, do I remember correctly that trouble codes 
> are cleared one you start and operate the car after the previous 
> occurrence.
> Ron Frazier
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