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I have replaced 02 sensor and App sensor after they coded .. but now the engine light has come back on and is showing code for app.
Did you realize you're posting in the community lounge? You question is more appropraite in the 2005 & up STS hangout.
Maybe a moderator will move the thread for you.
Are you using a high-quality code reader or getting a free parts store read? Many low end models only provide generic codes and not all the details.
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