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Th0r · 02-03-2010, 02:05 PM

I had a CEL for a month and just figured it was my post-cat 02 since I have no cat converter. Finally hooked a Tech2 up to it and pulled these codes:

P0130 - Circuit Closed Loop (CL) Performance Sensor 1
P0133 - Slow Response Sensor 1

So this in the pre-cat sensor in my header. It's only a month old and I'm not sure how it could be faulty already so I'm not wanting to throw a sensor at it yet. While testing a few other things I noticed that I was only pulling 1.9v from the PCM side O2 harness. Traced the wires as far back as I could and they appear fine. Now I thought normal operating voltage was in the 4-4.5v for the sensor. Is this correct or does the supercharged re-flash change the voltage for any reason?

02-03-2010, 02:05 PM	#1
Th0r GX Member Join Date: May 2008 Location: FL Posts: 216	02 Sensor codes I had a CEL for a month and just figured it was my post-cat 02 since I have no cat converter. Finally hooked a Tech2 up to it and pulled these codes: P0130 - Circuit Closed Loop (CL) Performance Sensor 1 P0133 - Slow Response Sensor 1 So this in the pre-cat sensor in my header. It's only a month old and I'm not sure how it could be faulty already so I'm not wanting to throw a sensor at it yet. While testing a few other things I noticed that I was only pulling 1.9v from the PCM side O2 harness. Traced the wires as far back as I could and they appear fine. Now I thought normal operating voltage was in the 4-4.5v for the sensor. Is this correct or does the supercharged re-flash change the voltage for any reason? __________________ GX Coupe Dropped and Blown