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The R keeps fouling o2 sensors, or at least throwing codes. ODB1, Hondata, JRSC

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Old Aug 2, 2006 | 07:53 AM
  #1  
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From: ITRCA Midwest Director, Topeka, KS
Default The R keeps fouling o2 sensors, or at least throwing codes. ODB1, Hondata, JRSC

I am curious to find out why the car keeps throwing a code for the primary o2 sensor. The primary was replaced back in September when I bought the car, and then a week ago I swapped the primary and secondary sensor because OBD1 does not use the secondary.

Every now and then (twice a week??) I get code 1 which is the primary sensor. It is a soft code and goes away if i turn the car off.

Is it possible that the ecu is bad? Or what other possibilities am I looking at?

JRSC 7 psi, Hondata S200, Kenji harness, RC 440 cc injectors, Hondata IM gasket, AEM cold air, stock exhaust manifold, gutted cat, apexi world sport 2 exhaust, Walbro hi flow pump.
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Old Aug 2, 2006 | 08:51 AM
  #2  
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From: not walker111 do a search hoes
Default Re: The R keeps fouling o2 sensors, or at least throwing codes. ODB1, Hondata, JRSC (ITR 1102)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ITR 1102 &raquo;</TD></TR><TR><TD CLASS="quote">I am curious to find out why the car keeps throwing a code for the primary o2 sensor. The primary was replaced back in September when I bought the car, and then a week ago I swapped the primary and secondary sensor because OBD1 does not use the secondary.

Every now and then (twice a week??) I get code 1 which is the primary sensor. It is a soft code and goes away if i turn the car off.

Is it possible that the ecu is bad? Or what other possibilities am I looking at?

JRSC 7 psi, Hondata S200, Kenji harness, RC 440 cc injectors, Hondata IM gasket, AEM cold air, stock exhaust manifold, gutted cat, apexi world sport 2 exhaust, Walbro hi flow pump.</TD></TR></TABLE>

Well swap them back. Maybe you had a faulty secondary...
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Old Aug 2, 2006 | 09:09 AM
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My secondary has been throwing a code for a while now.

I just ignore it, I don't think the Hondata cares really.
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Old Aug 2, 2006 | 05:04 PM
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From: ITRCA Midwest Director, Topeka, KS
Default Re: The R keeps fouling o2 sensors, or at least throwing codes. ODB1, Hondata, JRSC (walker111)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by walker111 &raquo;</TD></TR><TR><TD CLASS="quote">

Well swap them back. Maybe you had a faulty secondary...</TD></TR></TABLE>

I have never thrown a secondary o2 sensor code before, only the primary. That is why I find it very unlikely that the o2 is bad. Like I said, I replaced the primary only a couple thousand miles ago with a brand new oem one, before swapping my primary and secondary... But the primary sensor is bad, so there is no point in swapping them back now.

I basically want to know if anyone has heard of a bad ecu causing codes to be thrown when there is not really an issue (i.e. primary sensor) I have a p28 ecu
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