| | Pre Cat 02 sensor low voltage |  |
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Okie6.1
CAMM All-Star
Location : San Antonio, TX
Points : 7762
Posts : 1416
Reputation : 296
 |  Subject: Pre Cat 02 sensor low voltage  February 27th 2011, 4:12 pm | |
| just returned from a trip to San Antonio and on the way down I got both of these codes. Cleared them with my predator and they didn't come back until two days before I left to come home. Now I can clear them and drive and they will never show up until I shut the car off again. I checked all the connectors before I left and did not notice anything out of the ordinary. All 02 sensors are new when I did my Kook LT header install. Any idea what I need to do?
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The Black Stig
Supporting Vendor
Location : Lakemoor
Points : 6197
Posts : 557
Reputation : 103
| | Subject: Re: Pre Cat 02 sensor low voltage February 27th 2011, 5:17 pm | |
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Okie6.1
CAMM All-Star
Location : San Antonio, TX
Points : 7762
Posts : 1416
Reputation : 296
| | Subject: Re: Pre Cat 02 sensor low voltage February 27th 2011, 5:38 pm | |
| Has had the occasional rough idle but other than that running great. | |
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Shawn1112
Founding Member
Location : Hater Proof
Points : 34144
Posts : 12919
Reputation : 1607
| | Subject: Re: Pre Cat 02 sensor low voltage February 27th 2011, 6:00 pm | |
| Exhaust leak at the headers????? Did you ever re tourqe the headers, i know your supposed to after xxxxx amount of miles. | |
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Okie6.1
CAMM All-Star
Location : San Antonio, TX
Points : 7762
Posts : 1416
Reputation : 296
| | Subject: Re: Pre Cat 02 sensor low voltage February 27th 2011, 6:23 pm | |
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Shawn1112
Founding Member
Location : Hater Proof
Points : 34144
Posts : 12919
Reputation : 1607
| | Subject: Re: Pre Cat 02 sensor low voltage February 27th 2011, 9:06 pm | |
| - Okie5.7 wrote:
- Yes I did re torque them
What gaskets did you use, I hope Oem gaskets. The ones they give you with the headers are horse shit! | |
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Okie6.1
CAMM All-Star
Location : San Antonio, TX
Points : 7762
Posts : 1416
Reputation : 296
| | Subject: Re: Pre Cat 02 sensor low voltage February 27th 2011, 9:12 pm | |
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Okie6.1
CAMM All-Star
Location : San Antonio, TX
Points : 7762
Posts : 1416
Reputation : 296
| | Subject: Re: Pre Cat 02 sensor low voltage March 3rd 2011, 2:17 pm | |
| Rechecked the connections today and still getting code. | |
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firestartr420
CAMM All-Star
Location : Niles, Illinois
Points : 8714
Posts : 2314
Reputation : 292
| | Subject: Re: Pre Cat 02 sensor low voltage March 3rd 2011, 5:45 pm | |
| it could be a dirty sensor or possibly a worn wire. I believe the o2 sensors work through a resistance circuit, where the computer measures the voltage coming back from the sensor instead of what the sensor resistance actually is. I hope that makes sense. Either way, if you want to investigate it yourself, id start doing some voltage and resistance checks of the sensor and the wires going to it. | |
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Okie6.1
CAMM All-Star
Location : San Antonio, TX
Points : 7762
Posts : 1416
Reputation : 296
| | Subject: Re: Pre Cat 02 sensor low voltage March 3rd 2011, 5:55 pm | |
| I don't have anything to check the voltage out on them. | |
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firestartr420
CAMM All-Star
Location : Niles, Illinois
Points : 8714
Posts : 2314
Reputation : 292
| | Subject: Re: Pre Cat 02 sensor low voltage March 3rd 2011, 6:04 pm | |
| know anyone with a Digital Multimeter? Maybe an electrician buddy or something of the sorts? If not, you can pick one up at your local radio shack for probably 20-30 bux that will do most of the functions youd need to diagnose electrical problems. If you decide to go out and get a DMM, you gotta make sure it will measure DC voltage up to at least 20vdc (some meters only go up to 12vdc, while a running car is actually 14.7v) | |
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| | Pre Cat 02 sensor low voltage | |
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