OK, most of you have probably seen my thread regarding cat-related CEL, that I thought was resolved.

Got a CEL today. Is this related to the same issue as previously? (see link in my sig below).

Code:
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The code is complaining about an O2 sensor. I forgot which one though. I think it's bank1 postcat but not sure. Can you use Torque to plot the four O2 sensor voltage when engine is idling and fully warmed up?

 

Hmmm... I suck at the Torque app. Last time I thought I was graphing data, turns out I was graphing background noise.

Do you know of any good online instructions?

Oh, by the way, when I recently replaced my cats, I replaced all four O2 sensors, just because I felt like wasting $$.

 

I dunno about online instructions but the PIDs in questions are called:
O2 volts bank 1 sensor 1
O2 volts bank 1 sensor 2
O2 volts bank 2 sensor 1
O2 volts bank 2 sensor 2

Also good time to check the "Test Results" now that you have run the cats and new sensors for some time.

 

OK, when I get a chance, I'll take a crack at trying graphing again. For now, I just cleared the code, so I'll see if it comes back.

Thanks for the PIDs. There's a long list to choose from, so this is a big help.

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The Test Results all are fine. I refreshed it several times just to make sure.
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Good luck. Clearing it may work for this specific code since it could be a DME software issue. There was a TSB to update the s/w but not sure if it applies to your VIN though.

 

Thx. I'll revive the thread if the code comes back.