*ECU* code 1???

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Old Feb 18, 2002 | 05:18 AM
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From: DALLAS, TX, 75224
Default *ECU* code 1???

Hey guys, I'm at work and can't look at my Helms. What's this code mean?
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Old Feb 18, 2002 | 05:26 AM
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Default Re: *ECU* code 1??? (VTECHatch)

I believe 'one' is the oxygen sensor...
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Old Feb 18, 2002 | 05:30 AM
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Default Re: *ECU* code 1??? (marked001)

Do you think that's it? Or did you actually see it in the Helms?
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Old Feb 18, 2002 | 05:34 AM
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Default Re: *ECU* code 1??? (VTECHatch)

yeah, I just confirmed it, its 'oxygen content'...
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Old Feb 18, 2002 | 05:48 AM
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Default Re: *ECU* code 1??? (marked001)

Oxygen Content??? What the "F" is that? How do I fix that, guys? The light just came on this morning while on my way to work. Could it mean I have too much fuel pressure? I do have a FPR.
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Old Feb 18, 2002 | 05:54 AM
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Default Re: *ECU* code 1??? (VTECHatch)

simplest thing to do would be to check your o2 sensor and make sure the wires connected good...
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Old Feb 18, 2002 | 05:58 AM
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Default Re: *ECU* code 1??? (marked001)

Ok. I'll make sure to do that.
Thanks.
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Old Feb 18, 2002 | 08:06 AM
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Default Re: *ECU* code 1??? (VTECHatch)

Usually, it's nothing to worry about. Reset the ECU and see if it happens again (right away). I've found one driving situation where I can force a code 1:
My 100% stock D16A6 will produce a code one in the 100% stock ECU when I'm on a downhill grade (in 5th gear) steep enough to require a tiny bit of throttle - just enough to maintain hwy speed. The throttle blade is open like 5% and if it stays that way for about 20 seconds - code 1... Another factor may be the elevation - It happens anywhere between 5600 and 7000 ft.
My supercharged D16A6 civic does the exact same thing - even with a Zdyne gold. I've tried tuning it out with no luck so far. The A/F indicates it's a lean condition.

I've been meaning to try and fix it in the stock D16A6 - changing o2 sensors, plugs, etc....
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