i have an 03 accord v6 its got 110k miles on it and i just got a friend of mine to hook up some subs and amp, while he was trying to figure out what fuse the remote wire went into he was pulling them out testing them all; starting the car for some reason. when he got done my check engine light came on. the p1041 code i believe it is and the other o2 sensor came up when brought up to autozone, tryed having it cleared but it came right on again... i dont see how both of them went bad jus from pulling fuses, and the fuses arent blown. atleast they dont look blown.

ive heard of grounding issues, circuit issues, and more i just dont know how to check these thing out.

i really dont want to go spend 200 plus dollars on them and it not be the problem... also do i really need 2 upstream sensors?

i will apreciate all the help i can get... thanks, jon

 

First confirm that code. P0141 maybe?? That's just the rear sensor heater.

 

yea when diagnostic test was ran both the front and the rear were showing.

 

The actual error code numbers are important if you want more specific help. Otherwise you could replace 3 sensors when you might only need 1.

 

ok so i replaced the sensors and the light is still on. tryed to erase the code and it keeps coming back right away. is it in the circuit or bad ecm or whaT? im getting very fustrated with this car..

 

Yonn......You come here for help and advise but when we give it to you , you disregard it ( replaced the sensors) Jim's advice was a good one,, input the code
and we could have hopefully diagnosed it and saved you some money..

So again, input the code (s) before you decide to replace the ECM ..

 

its P0135 and P0141

 

P0135 (41) pri.HO2S heater circuit
P0141 (65) sec.HO2S heater circuit

Did you check the resistance of the heaters before replacing the sensors?
front should be 2.1 to 2.9 ohms
rear should be 5.0 to 6.4 ohms

Since you already replaced the sensors, probably the heaters are good. That leaves the circuits, and I'd start with the power source. I don't have a wiring drawing for the V-6 car, but I suspect all the sensors heater power comes from the same source. A problem there would explain why both are bad.

Remember, the error doesn't mean the sensor itself is bad. It just means the ECU isn't measuring what it wants to see. It sounds like a wiring problem in the car.

 

so i dont know much about wiring in these cars.. where can i start to look to find the problem? what is the power source that runs these?