Take a look at page 228 if you haven't found it already.
Good idea, but the LAF heater circuit is a code 41, not 48.
Thanks Bobski. I was having a hard time finding the relevant page. Well, the CEL doesn't come on when I do the 1500rpm test in 3rd gear.
I have been driving less efficiently this tank, yet I first went below 1/2 tank at 270 miles compared to last tank at 275. Anyway, seems the next step I need to do is lots of testing via this manual. But I can't say I feel too comfortable doing it. Not sure I want to ask my mechanic as I think he is not interested in humoring me as it were. I still haven't installed my ECU. Never got a chance today. But doesn't seem like it's too hard. Maybe tomorrow I get to it! Then at least the ECU will have been reset.
Here is what I have written in the reply (I haven't sent the reply yet.)
I had the mechanic install the part for me. I purchased a 5 wire o2 sensor designed for the 1992-1995 Honda Civic VX with lean burn VTEC-E D15Z1 non-California motor, which is what my car is. I watched the mechanic install it.
Should I add that the car does not have a separate LAF sensor and that the code is referring to my o2 sensor?
Just say that you bought it for a 92-95 D15z1 non-california civic. Don't mention anything about lean or LAF since they are obviously fools or liars. Mention they have a 1 year warranty on defective parts. Also mention that this was the only change made...
They're totally wrong about the LAF and o2 sensor being "different parts" right? The o2 sensor is the LAF, correct? There is no o2 sensor and LAF in my car, right?
Right. The LAF is an oxygen sensor with a linear response curve. Typical 4-and-less wire O2 sensors are collectively known as lambda sensors. They have an essentially flat response curve until you reach 14.7:1, where it makes a very steep transition from 0 to 1 volts. Both sensor types depend on oxygen content in the exhaust to generate a signal... They're oxygen sensors.
Newer ('96+) Civics have a second oxygen sensor on the downstream side of the catalytic converter. In the case of the '96-00 Civic HX, it may use both an LAF and a lambda oxygen sensor... Your VX should have only an LAF.
I have little doubt that many of the people that buy these fake sensors have problems and try to return them. The company's well aware of these problems, possibly before they started selling the products, and are just trying to BS you out of your money. Welcome to ebay.
My o2 sensor I bought from you is throwing code 48 (LAF: Lean Air Fuel Sensor) I am requesting a replacement part that will work! Please contact me about exchanging my o2 sensor for a working 5 wire L1H1 o2 sensor. Thanks,
Dear Valued Customer,
That is the problem. The item we sell is an "OXYGEN SENSOR", not an "AIR FUEL RATIO" sensor. These two parts look the same, but are very different. The two cannot be interchanged.
Looks like you purchased the wrong part or your trying to install on a position that is incorrect.
We suggest to all customers that they use a certified mechanic to install all parts. This is what they went to school for.
Uh, I don't think they get it. Tell them the VX uses an L1H1 oxygen sensor and that their ad or auction was for an oxygen sensor for that car. It does not work. And tell them you had a mechanic do it so they can't get ya on that.