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Old 08-23-2024, 07:13 PM   #1
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Join Date: Aug 2024
Location: Ontario, Canada
Posts: 2
CEL with P0326, P1123, P1125 advice for a newbie.

Hey all! Newbie ‘99 986 Boxster owner, I’m getting a reoccurring CEL with P0326, P1123, P1125. I’ve cleared it once and drove for a bit with no issue. Today after a bit of driving and giving it a bit more throttle, this code combo popped up again. I did notice some hesitation at 5-6k rpm. I’m still on the first tank of gas since purchase and apparently it was sitting for a bit.

For the P1123 and P1125, I’m thinking of trying some fuel injector cleaner. Possibly a fuel filter change. Is this a good starting point?

Looking for some advice on the P0326 - Knock sensor 1. This one sounds scary, but is it just that there is an issue with the sensor? Or, caused by the other codes? Or did it detect a knock which sounds bad.
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