• Announcements

    • Sean T.

      Having trouble logging in after the update?   04/25/16

      After the forum update, you need to use your displayed name as your login. Your password should remain the same. If you are still having trouble, please e-mail Sean [email protected] and he can reset your password.
    • Sean T.

      Help Support TSOC by Making a Donation!   01/29/17

      TSOC is funded by donations only. The operating expenses for TSOC are about $320 annually for hosting, domains, and IP Board license renewals. Support from our members is greatly appreciated. As always, we appreciate ANY and ALL donations! From $1.00 to $1,000.00, anything you give will support the forums and community experience. You are always free to make a standard donation towards the forums, but if you aren't already a paid member, your donation can include extra benefits!   Click HERE to learn more about our membership levels!  
Sign in to follow this  
Followers 0
hmrambling

P0443 Solution Not In The Manual

3 posts in this topic

A google search of P0443 renders results with stories of people changing their ECU and having it flashed along with a lot of guesses with how to fix the problem. The problem is that the code is non-specific and requires specific diagnostic tools to diagnose, and even then, the proposed solution does not fix the code. While the code says that this is the problem:

cx1687.jpg

After you replace it, you still have the code.

I stumbled upon the following post and it seems to work (so far)

Had same problem with my 97. Over the course of a year and a half I checked or peplace everything in the circuit with no results. found the cure last month. Under the rear passenger side door is the fuel filter. Next to it is a metal tube with a fitting in it. Open the fitting and empty the line of any fuel. Clear the code and you should be good to go.

Source

So, if you have the P0443 pop up, you may want to try to solution above BEFORE replacing the Vapor Canister Purge Valve or letting a shop lead you to replace your ECU.

Share this post


Link to post
Share on other sites

Actually the code means that there is a problem with the purge valve. Opening and draining manually the canister does not solve anything, problem will reapear when the canister is full. Quote from here:

To cause a P0443, there has to be a problem with the purge control CIRCUIT, not necessarily the valve. Usually they are a unit housing the valve and the solenoid as an assembly. Or it could be comprised of a separate solenoid with vacuum lines to a purge valve. That said, it could be any of the following:

  • Bad purge solenoid (internal short or open)
  • Wiring harness chafing or rubbing another component causing short or open on control circuit
  • Connector worn, broken or shorted due to water intrusion
  • Driver circuit inside powertrain control module (PCM) is bad

Edited by SoNic

Share this post


Link to post
Share on other sites

CEL stayed off 2 days and returned as you predicted. Bought the part on Amazon and should have it in on Wednesday. There was always wishful thinking, guess it was worth a try. :(

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0

  • Recently Browsing   0 members

    No registered users viewing this page.