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Burned rear o2 wire make engine knock?

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Old Aug 9, 2018 | 04:00 PM
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Default Burned rear o2 wire make engine knock?

I just installed pfadt headers and today when i was out driving the engine light come on and a got 3 codes:
P0137 - O2 Circuit low voltage bank 1 sensor 2. (I assume i did burn the wire to the o2 on the headers, been there done that before =) )
P0324 - Knock control system error
P0331 - Knock sensor 2 curcuit range/performance bank 2

But can a burned rear o2 wire make knock? Never seen that on my previus c6.
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Old Aug 10, 2018 | 09:13 AM
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Knock sensor wires are right there too, you sure you didn't burn that one or leave it unplugged?
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Old Aug 10, 2018 | 03:45 PM
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No burned wire to the knock sensors. i did unhock the rear o2 and disable them i hp tuners.
I will make a log next time i drive.
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Old Aug 14, 2018 | 04:15 PM
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Originally Posted by n_brio
I just installed pfadt headers and today when i was out driving the engine light come on and a got 3 codes:
P0137 - O2 Circuit low voltage bank 1 sensor 2. (I assume i did burn the wire to the o2 on the headers, been there done that before =) )
P0324 - Knock control system error
P0331 - Knock sensor 2 curcuit range/performance bank 2

But can a burned rear o2 wire make knock? Never seen that on my previus c6.
If the O2 can't send the right signal to the ECU and can't request fueling then your fuel trims will be wrong, can go lean, and cause knock. So yes, its possible.
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Old Aug 17, 2018 | 01:40 AM
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Originally Posted by TriPinTaZ
If the O2 can't send the right signal to the ECU and can't request fueling then your fuel trims will be wrong, can go lean, and cause knock. So yes, its possible.
Are the rear o2s even needed? I have my wideband in one of the rear o2 bungs and left the o2 connected and just zip tied it up in the exhaust tunnel. Everything seems to work fine. I leave Wideband o2 in full time.
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Old Aug 19, 2018 | 09:43 PM
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Originally Posted by Poppacapp
Are the rear o2s even needed? I have my wideband in one of the rear o2 bungs and left the o2 connected and just zip tied it up in the exhaust tunnel. Everything seems to work fine. I leave Wideband o2 in full time.

Rear O2's are needed unless you tune them out. If you did not turn them off and disable the efficiency tests then you have a problem.

The rear cats are not needed as they are not monitored. The rear O2's are in front of the rear cats and they measure the efficiency of the catalytic converters.
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Old Aug 22, 2018 | 12:33 AM
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Originally Posted by TriPinTaZ
Rear O2's are needed unless you tune them out. If you did not turn them off and disable the efficiency tests then you have a problem.

The rear cats are not needed as they are not monitored. The rear O2's are in front of the rear cats and they measure the efficiency of the catalytic converters.
Gotcha. Yeah DTCs are shut off and tests disabled. Everything working great
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