Mazda Millenia This sedan, the flagship luxury sedan, offers both a naturally aspirated and supercharged model, so you can have your luxury, and, if you have a need for speed, big horsepower.

Clearing codes on 1995 Millenia

Old 05-30-2012, 09:27 AM
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Join Date: May 2012
Posts: 22
Default Clearing codes on 1995 Millenia

I just have gotten done with alot of engine work and want to clear the codes. Ive disconnected battery and the check engine light still on. Being its OBD1 am I missing something?

I want to clear them and drive it so im not seeing old codes ive already fixed.

I dont have a scanner yet to read whats logged now. Any advice?
Old 05-30-2012, 09:34 AM
Join Date: Dec 2011
Location: Canada
Posts: 2,636

I remember tanprotege saying after you disconnect battery, to then go and depress the brake pedal for 10 seconds to suck any leftover electrical juice. I would also leave it unhooked for 10-15 minutes before hooking it back up. Let it idle for 10 minutes before driving. Do not floor it for a few days. gradually work your way up to flooring it after a few days. Not sure if ODB1 or 2 makes a difference.
Quote from his post: "After you have done something clear the codes by removing the battery negative cable and then stepping on the brakes. The brake light circuit will drain all voltage from the memory chips." From: Post #3.

Last edited by UseYourNoggin; 05-30-2012 at 09:56 AM. Reason: Found Quote from tanprotege
Old 05-30-2012, 11:09 AM
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Join Date: May 2012
Posts: 22

I tried the brake pedal trick and still light illuminated. I guess the OBD1 is diffrent then OBD2 in a sence that there is no readiness it has to run through. The check engine light comes right back on. Ill try again.
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