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Flashing CEL While key is in ACC

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Old 07-21-2013, 11:19 PM
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Curious if anyone else has experienced this? I haven't found a thread describing it...

Vehicle Details:
2004 GT manual
94,000 miles
Aem intake
B&B test pipe and catback
Cobb AP (MazdaManiac tune)

Issue:
When I turn the car on, engine NOT started (key turned to acc). All the dash lights come including the CEL. If I wait about 15 seconds the CEL flashes a few times (aprox 8 times) and stays on until I start the car.. I have connected the AP and used the code reader. It gives me a P0000 and 4 tpms errors .i don't believe the tpms is causing issues as I have my stock wheels on at the moment. I'm am not sure what is causing the flashing CEL. I have read that flashing CEL most times (95% of the time) is a misfire. But is this the case when the vehicle isn't started?

Last edited by ableobject; 07-22-2013 at 01:20 AM.
Old 07-22-2013, 10:36 AM
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the flashing CEL with the engine off is normal.
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