Hi!

My girlfriend's civic ex 1997 manual transmission cel is on. She says it came on long time ago.
I thought maybe I can fix that.
Got the code pulled @ autozone:
P0135 Primary Heated Oxygen Sensor (Primary HO2S) (Sensor 1) Heater Circuit Malfunction

Thanks to helpfull posts I found out that I should first check the oxygen sensor with an ohm-meter. Haven't done it yet, but I will.

My question now is: If I have to replace the HO2 sensor, what is the right part (part number)?
I checked at majestichonda.com. They list only two ho2 sensors. the SENSOR, FR. OXYGEN for $155 and SENSOR, RR. OXYGEN $227. I guess I need the one for $155.
But my problem is: Why are they so expensive? Other posts say something about $60-$80.
Is the oxygen sensor for a manual transmission more expensive than for the automatic?

Thanks

Kresi

 

My guess would be that the $60-$80 o2 sensors people are talking about are the aftermarket Autozone, Murray's, Advance Auto sensors. Bosch particularily comes to mind for o2's. You are getting a better part by ordering a "genuine" honda o2 but you are also paying twice as much or more. IMO, I would bite the bullet and get the Honda o2. Some other people might have more to add.

 

Oh, and about the sensor FR and Sensor RR. That stands for front (FR) and rear (RR) o2 sensors. You have two of them on your car and bank one is going to be the one right off the engine on the exahust pipe.

 

PO135 is for the primary sensor, or the front. I had PO141 come up, which is the secondary sensor, or rear. I haven't replaced it yet, but i've seen them from $30-150. If you want to splice wires you can buy a 30 dollar universal o2 sensor at carpartswholesale

 

thank you guys.

i think i'll get the one for $30. splicing those wires shouldn't be a problem.

kresi

 

I bought the $40 Bosch and spliced it with my old one on my 97 civic. Everything works fine.

 

did you have a wire chart/ pattern? There are 4 wires, how do you know which wires go where?

 

good question.

well, i don't have a wire chart/ pattern.
thought i could figure it out somehow. i haven't compared the old and the new sensor yet. (haven't ordered a new sensor yet)

the wires have different colors. hope the wire colors on the new and the old sensor match.

 

If it were me...before I started cutting and splicing wires I would go to www.hondapartscheap.com and look up the part number for the front o2 sensor.
Then I would go to www.densoproducts.com and do a search of the Honda part number and it wil tell which Desno sensors fit. Just my humble opinion.

 

houstonnewyork- did u splice the wires yet and see if that works?