Finally trying to get rid of P0420!!!!
09-22-2010, 09:02 PM
#1
Finally trying to get rid of P0420!!!!
I have had this code now for about a year and was ignoring it but lately I been getting real tired of that darn light and now really want to get rid of it..I didn't get the code until after I installed my headers and y-pipe. I tried the non-fouler method but that didn't work and its still in there. So it seems like the only other option now is to try the o2 sims but my question is how to wire it up because the only how-to i seen up here was the one for the 5.5 gen Cali spec and I have a 2000 fed spec. I would really like to hear from someone with the same spec that has successfully installed the simulator or if you generally know how to install to chime in on this thread it would be greatly appreciated. If you have or could make a write-up that would be great!
09-23-2010, 07:20 AM
#4
I just want to make sure Im splicing the right wires together, I hear some say that the wire colors are different and I only have 2 plugs for my o2 so do I splice into the second one? the one to the right when im standing in front of the motor?
09-23-2010, 08:34 AM
#5
Senior Member
Join Date: Feb 2009
Location: BOSTON
Posts: 347
not to jack but I was thinking of using some sims to do these work??
http://cgi.ebay.com/Universal-O2-Sim...item3a5e4994b3
will I pass inspection and are they detectable during inspection??
if not witch ones will work
http://cgi.ebay.com/Universal-O2-Sim...item3a5e4994b3
will I pass inspection and are they detectable during inspection??
if not witch ones will work
09-23-2010, 08:50 AM
#6
not to jack but I was thinking of using some sims to do these work??
http://cgi.ebay.com/Universal-O2-Sim...item3a5e4994b3
will I pass inspection and are they detectable during inspection??
if not witch ones will work
http://cgi.ebay.com/Universal-O2-Sim...item3a5e4994b3
will I pass inspection and are they detectable during inspection??
if not witch ones will work
09-23-2010, 10:26 AM
#9
so how did you ever get rid of the code? or is it still present?
09-23-2010, 10:55 AM
#11
i still have the code...but right now i'm going to start working on getting rid of the misfire code, i'm not so much worried about the light anymore..i've had it since i've had teh car so its like, if its gone...ill miss something now lol
09-23-2010, 11:39 AM
#14
Senior Member
Join Date: Feb 2009
Location: BOSTON
Posts: 347
09-24-2010, 09:08 PM
#16
So I ordered my single-output o2 sim and I just want to make sure im going to install on the right harness..the picture is my FED spec and I would be installing the sim on the far right harness in order to clear but the P0420?
09-25-2010, 04:41 AM
#17
yea sorry about the no response...theres no need to get a dual..i didnt know how they looked in essence, but thought i could hook up two sensors to shut off the light, but it didnt...so a single, if it works, should work just as effectively.
as far as hooking it up, i did mine straight where the sensor itself is.
as far as hooking it up, i did mine straight where the sensor itself is.
09-25-2010, 08:23 AM
#20
yeah i understand...Im going to have to get up under the car and see what my spacing is looking like, did you splice closer to the sensor itself or close towards the harness? and even though i understand you installed where the sensor itself was, am I still right in the harness location in the picture I posted?
09-25-2010, 08:46 AM
#22
Hey man thanks for the help..i just went outside and I looked at the harness on the right and pulled back the insulation and the color wires are:
left harness: white, red/yellow, red/blue
right harness: white, black, grey, red/green
Im looking up different directions here on the ORG and im getting mixed wire colors to where to install the sim too..
left harness: white, red/yellow, red/blue
right harness: white, black, grey, red/green
Im looking up different directions here on the ORG and im getting mixed wire colors to where to install the sim too..
09-26-2010, 09:07 AM
#26
Have you tried replacing the front pre-cat? This will take care of the code IF you have already tried replacing the affected O2 sensor and it didn't go away.
I know there are aftermarket pre-cats available and have seen a few threads on this. It might make your life easier versus figuring our the O2 sensor and you really have eliminated the problem, versus masking the problem.
Might be worth a check....
Ryan
I know there are aftermarket pre-cats available and have seen a few threads on this. It might make your life easier versus figuring our the O2 sensor and you really have eliminated the problem, versus masking the problem.
Might be worth a check....
Ryan
09-28-2010, 08:48 AM
#31
There's only one downstream sensor on the Fed spec, so you just need to confirm that is the one, although it appears correct. If you want, trace the wiring down to make sure it is the one that corresponds to the Bank 1, Sensor 2 in this diagram.
If you could, take a look at what color the wires are going from the connector in the direction of the ECM, from there, it'll be easier to help you. If I'm reading the FSM correctly, the wires should be:
Red/yellow - power
Pink/blue - heater circuit signal
White - signal
Black - ground
If those correspond to what you have, you should be able to follow the rest of my writeup. Basically, you tap the power and ground, intercept the signal from the O2 sensor, and leave the heater wire untouched (and the sensor plugged in). Let me know if you have any questions.
If you could, take a look at what color the wires are going from the connector in the direction of the ECM, from there, it'll be easier to help you. If I'm reading the FSM correctly, the wires should be:
Red/yellow - power
Pink/blue - heater circuit signal
White - signal
Black - ground
If those correspond to what you have, you should be able to follow the rest of my writeup. Basically, you tap the power and ground, intercept the signal from the O2 sensor, and leave the heater wire untouched (and the sensor plugged in). Let me know if you have any questions.
09-28-2010, 07:31 PM
#32
just doubled up on the non-foulers, when i first did it I only had the one drilled one installed and the code came back so right now I installed a non-drilled one on top of it and in the process in seeing if the code comes back.
*side note, I might have a single-output o2 sim for sale if this works*
*side note, I might have a single-output o2 sim for sale if this works*
09-30-2010, 06:46 PM
#33
So to give a quick update. So I put the extra non-fouler on the o2 since they say you need 2 and I only had 1, installed that yesterday, reset the ECU and drove 60 miles today and the SES light pops back on. So I got the car scanned and the code was P0134 (02 Sensor Circuit No Activity Detected (Bank I Sensor 1). So the non-fouler must have pulled the o2 sensor back too far to where its not reading or the o2 sensor is bad. So i wanted to take a look at the wires since I have my o2 sim coming in the mail either tomorrow or Saturday, I pulled back the wires from the o2 sensor and the color wires I seen were: white, white, grey, black. The harness runs through the car and under the seat.
So my questions are what wires do I tap into with the o2 sim?
So my questions are what wires do I tap into with the o2 sim?
10-01-2010, 06:37 AM
#35
Senior Member
Join Date: Mar 2004
Posts: 497
P0134 (02 Sensor Circuit No Activity Detected (Bank I Sensor 1).
Please understand that you have to put the non-fouler on BankXSensor2 (secondary). The BankXSensor1 (primary) is used for fuel metering and you do not mess with it. Your code suggests that you have bad primary sensor on bank 1 which is closer to the firewall.
Start from scratch again. Make sure you are not putting non-fouler on the wrong sensor. Make sure all connections are good. If that code comes back, you need a new primary sensor. Make sure you buy only Denso or NGK/NTK i.e. don't buy Bosch. Pay little more and pick up OEM sensor which you don't have to cut wires.
- Vikas
Please understand that you have to put the non-fouler on BankXSensor2 (secondary). The BankXSensor1 (primary) is used for fuel metering and you do not mess with it. Your code suggests that you have bad primary sensor on bank 1 which is closer to the firewall.
Start from scratch again. Make sure you are not putting non-fouler on the wrong sensor. Make sure all connections are good. If that code comes back, you need a new primary sensor. Make sure you buy only Denso or NGK/NTK i.e. don't buy Bosch. Pay little more and pick up OEM sensor which you don't have to cut wires.
- Vikas
10-01-2010, 07:26 AM
#36
Yea I have the non-foulers on the one after the cat. It weird because that code didn't come up until I used the non-foulers. So maybe the non-foulers are doing their job on the o2 after the cat but now all of a sudden, one of my primary's go out...smh.
10-01-2010, 08:32 AM
#37
im going to ride for a little longer and see if the non-foulers cleared up my P0420 code and if the P0134 code is still there, then im going to go ahead and replace the o2 and hopefully ill be good, hopefully
10-01-2010, 09:11 AM
#39
yeah i really dont know where I can get access to that from, is their any other way I can test it without that? I just want to make sure, before I go out and speng $100+ on a o2 sensor.
10-01-2010, 11:54 AM
#40
Senior Member
Join Date: Mar 2004
Posts: 497
You can swap the both front sensors and see if the error follows the sensor. Make sure the wire lengths are adequate. I am not sure about that though.
Do you want to take a chance on $100 O2 sensor or invest $100 in a scanner? You decide!
- Vikas
Do you want to take a chance on $100 O2 sensor or invest $100 in a scanner? You decide!
- Vikas