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Discussion Starter #1
Does any one have any pictures of the LAF senor on the car, and also does a new LAF come with the wiring harness for it or do you remove the old one?

If so how?
 

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On the first cat the LAF o2 sensor is the one at the very top (In my picture it is the one to the left with the green sleeved wire)



If you are having them diagnosed dont do it through honda go to a private mechanic and have them MANUALLY tested

A Bad 02 sensor scope reading will look like this on the insight



And a good one will look like this





Good luck
 

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Dezoris said:
Does any one have any pictures of the LAF senor on the car, and also does a new LAF come with the wiring harness for it or do you remove the old one?
If so how?
Photo Link: (Moderator edit due to size of photo)
http://img22.exs.cx/img22/5775/DSC219.jpg

New OEM LAF's come with the connector, universal ones don't. All you need to replace it is a 22mm "open box wrench". it takes 2 minutes, 4 for the mechanically challenged.
 

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Discussion Starter #5
Thanks, now I wish I bought it threw you.
After I replace it I will have the old one tested.

Is there any other reason I would get frequent codes for a failed LAF?
 

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Bench testing is unreliable unless the test bench is set up for dynamic testing (same as on the car). If the code is _not_ the sub "code" O2 sensor heater circuit then its not unusual for it to come and go. O2 sensors commonly fail by degree. So in the advanced stages of failure it may work sufficiently at times to inhibit the code. And an O2 sensor code by OBDII definition can self "clear" the MIL (but is stored in memory).

Delay in replacement can stress an otherwise marginal CAT that could last for many thousand more miles. (Don't delay)

HTH! :)
 

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Getshocked.ca said:
On the first cat the LAF o2 sensor is the one at the very top (In my picture it is the one to the left with the green sleeved wire)
[mod edit see pic above]
In that picture, the LAF sensor is on the right. The sensor on the left is the secondary O2 sensor.
 

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Aaron Cake said:
[quote="Getshocked.ca":1k5fxrwg]On the first cat the LAF o2 sensor is the one at the very top (In my picture it is the one to the left with the green sleeved wire)
[mod edit see pic above]
In that picture, the LAF sensor is on the right. The sensor on the left is the secondary O2 sensor.[/quote:1k5fxrwg]

To clarify,

The LAF sensors are 5 wire widebands (L2H2), apparently used on 00 and 01 5spds only. Wire colors : Blue, Black, White, Yellow, Grey (required for lean burn).

5 wire widebands are not readily available and for this reason they are expensive, versus narrow bands which are stocked daily at your local Autozone.
 

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To further clarify:

There appears to be more than one twist in the Insight's LAF O2 sensor wire configuration. GetShocked.ca's _Canadian_ Insight clearly shows it to be a 5 wire and its a 5 speed. Since Honda CA has stopped importing Insights for sale (AFAIK) what the Mix & Match is up there is unclear. And there will likely be a different euro spec. But that's also unclear.

However, the US Factory Service Manual, its 02 Supplement and the Electrical Troubleshooting manual all clearly specify a 4 wire LAF type specified as used in _later_ production 01 and up (sorry dont have one yet I missed that earlier). It more accurately specifies that the 5 wire sensor is only used in 00-_early_ 01 production Insights and does NOT specify a CVT vs. 5 spd. difference. My 02 5spd. is a _4 wire_ LAF type O2 sensor.

There is no difference in CVT vs 5 spd. LAF configurations (again according to the "book" and my new more careful read of it ETM Pg.23-5, 7). While its true that a CVT doesn't have what is commonly referred to as "lean burn" it may still push the limits of a conventional O2 sensor beyond its abilities. So a LAF type is still required and can be inferred so as shown by the manuals.

HTH! :)
 

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Discussion Starter #10
What is the difference between the 4 and 5 wire LAF, did they dump the heater ground?
 
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