[Z06] Help - Check Engine Light
02-07-2016, 09:12 AM
#1
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Location: San Antonio Texas
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Help - Check Engine Light
So I had LG LT headers (with 3" pipe back and hi-flo cats) and a cam installed about 3 weeks ago and yesterday the check engine light came on. Swung it by a random autozone and the computer showed: "Replace Oxygen Sensor(s): Error Code P0151 O2 Circuit Low Voltage (Bank 2, Sensor 1)". And in its defense the car went from usually 11 mpg to about 9 mpg yesterday and died while idling for the first time ever in the evening. When I went to restart it actually struggled a bit. Should I get educated on how to change it out and buy the $65 sensor or is it worth contacting the shop about some sort of issue? A guy at work told me those new headers will get a lot hotter and can start frying some wires...(not sure if there's any validity to that or not). Any guidance from some of you guys that have already done these mods or replaced an O2 sensor? It's an 07' with 56,000 miles
Last edited by Joram; 02-07-2016 at 11:13 AM.
02-08-2016, 08:13 AM
#4
The stock headers have a built-in heatshield, the aftermarket headers do not. The aftermarket headers also move the location of the oxygen sensors. The installer has to take care to ensure the wires are out of harms way and will not melt. I'd be willing to be you have some melted wires for your oxygen sensors.
It is an easy fix, just be sure to tie the wires out of the way when you replace the oxygen sensors.
It is an easy fix, just be sure to tie the wires out of the way when you replace the oxygen sensors.
02-08-2016, 01:55 PM
#5
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The stock headers have a built-in heatshield, the aftermarket headers do not. The aftermarket headers also move the location of the oxygen sensors. The installer has to take care to ensure the wires are out of harms way and will not melt. I'd be willing to be you have some melted wires for your oxygen sensors.
It is an easy fix, just be sure to tie the wires out of the way when you replace the oxygen sensors.
It is an easy fix, just be sure to tie the wires out of the way when you replace the oxygen sensors.
02-09-2016, 06:51 PM
#7
Le Mans Master
So I had LG LT headers (with 3" pipe back and hi-flo cats) and a cam installed about 3 weeks ago and yesterday the check engine light came on. Swung it by a random autozone and the computer showed: "Replace Oxygen Sensor(s): Error Code P0151 O2 Circuit Low Voltage (Bank 2, Sensor 1)". And in its defense the car went from usually 11 mpg to about 9 mpg yesterday and died while idling for the first time ever in the evening. When I went to restart it actually struggled a bit. Should I get educated on how to change it out and buy the $65 sensor or is it worth contacting the shop about some sort of issue? A guy at work told me those new headers will get a lot hotter and can start frying some wires...(not sure if there's any validity to that or not). Any guidance from some of you guys that have already done these mods or replaced an O2 sensor? It's an 07' with 56,000 miles
Clif