Cobra289

Hi,
Just from the start Datamaster send me an “Error code 13” (O2 Fail) but looking to the log file I can see that the sensor give an average of 452 mV with a top of 821 mV and a low of 160 mV.
Looking to the Xcnts (cross counts) I see the next values Max. 255 and Min. 0, and avg. of 132.8

Looking to the close loop vs. open loop, I can see that Close Loop is only for a short period 20 sec.

Reading to the previous post I found that the O2 sensor have a reference O2 measurement of the atmosphere.
Can be there the problem? A clogged reference port?
Where specific is the port allocated?
It is a one wire O2 sensor

I have a 305 TPI from 87 with a 165 ECM, the BIN file is original.

Regards,
Cobra289

Trickster

Maybe this chart will help you in troubleshooting the problem

Trickster

page 2

Cobra289

Hi Trickster,
I will use these diagnostic cards.
I hope that it is not the ECM because it is a DELPHI remanufactured one. (16198259)
Regards,
Cobra289

3.8TransAM

My 2 cents on the 02 issues :-)


I would say the top 2 causes for wacky 02 signals/issues is

#1 bad 02

#2 that grd it shows is the one on the rear pass cyl head(they come loose fairly often )

check those out and since your already there, ohm the wire end to end (from sensor lead to ecm pin)

That will let u cover all the bases and point u in the right direction
later
Jeremy

Cobra289

Thanks “3.8TransAM” for pointing some directions.
I have tested the ground located at the passenger head today and it was OK.
I thinks that is a bad O2 sensor due to the fact that the last week I have put a new oil pan gasket and I have used not the RTV silicone but some “Loctite” sealing compound and I thinks that this have destroy my O2 Sensor.
Hey I get rid of the oil leaking but the O2 is destroy, something for the “Lessons Learn”
I will buy a new O2 but should I wait for a while, till the sealant contamination is gone?
Any advice?
Regards,
Cobra289

gotay5

same problem code 13 after O2 header installation on 1991 z28 camaro 5.0 tpi