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Damn emission code

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10+ Year Contributor
2,123
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Aug 11, 2009
Allentown, Pennsylvania
I have a code and when I looked it up P0443 came up. These are the causes I found online, which does not really help me. Which part is bad and where is it located? Or can it be a bad hose?

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

this is on a 95 GST BTW
 
The best thing st start with so you're not tracing wires for days is to replace the solenoid first. I made the mistake of overlooking my FPS, traced wires for 3 days and realized it was the solenoid itself. It's like $45 from the dealership
 
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