Thanks for the video lesson. mine is 03. Just to give back some, Use an upholstery trick for feeding the wiring harness. Either tape or wire the new connector to the old o2 sensor before you pull it out or fish through the path with wire to hold the new connector and pull back up.
Very helpful! Thanks for showing the location and the tab details on male and female. Took me an hour and $25 to replace it. It would not take more than 15-30 min if the connector had not been in that tight spot which is difficult to reach even with one hand. But finally did it using thumb for female connector tab, and pointer for male.
Thanks for the post. I have an '03 and this was the only helpful video I could find. My wife's Pilot has been through two teen drivers and many family vacations so the exterior is nowhere near as nice as yours. Nice job!!
IMPORTANT UPDATE For disconnecting the O2 sensor plugin for the upstream sensor (on a bracket with two electrical plugins): remove the bracket using a 12mm socket. Do not attempt to unplug the old sensor until you remove the bracket. Why? The sensor plug-in has two tabs that must be manipulated to disconnect it. One tab that is visible disconnects the sensor from the wiring harness. A 2nd tab at the opposite corner disconnects the sensor connector from the bracket. By examining the new replacement sensor wiring connector, you can see exactly what I am talking about.
Some tips: To get those nasty white wire harness clips off you can get the lower one pretty easy with your fingers or some needle nose pliers. the barbs are side to side. On the upper on they are top and bottom. I tried for a long time with my hand squeezed in there and then gave up. When under with a slip bar and pried it off. You can bend the barbs back in place after you get it out. If damaged too much just zip tie it on the bracket. Not worth the hassle and back ache to worry about. Using a wobble socket extension with a O2 socket helps to getting the sensor off safely.
Good job man! Good documentation. I have only a few days before smog check & state registration. Now I have faith that I can do it reasonably. Also, I think I will try dropping a string through to thread the cable.
Tnx for the video, I have a 2003 Pilot, just wondering if replacing these 2 sensors would make any difference in fuel consumption as mine only gives me about 15 mpgs, I’m trying to get it to improve on that department as fuel prices are through the roof
Thank you so much for this. Thanks for giving back. I changed my catalytic converter and my sensor and I still have the erro code 420 and until this video I had no idea there was an upstream sensor. So I ordered the two of the exact ones you listed. Thanks again, that had to be my problem that I never changed the upstream with 250,000 miles
Good video. Thank you. It might be most helpful to describe the plug(s) you're talking about (like "4 pin" or "6 pin") to clarify. Also, mentioning O2 sensor tool size (i.e. 22 mm which is 0.8661" or simply 7/8 which is 0.875") is also useful. In referring to "upstream" and "downstream" sensors, what is the point of reference? The engine or exhaust pipe directly off the engine? For the '04 Honda Pilot, the Upstream (Part 234-4368) is located on the exhaust pipe, while Downstream (Part 234-4601) is mounted on the Catalytic Converter. Both Upstream and Downstream sensors are 4-pin plugs.
Awesome video! I have an 03 pilot and I have problem that every morning If I don’t warm it up then put it on reverse or gear it dies. By any chance did you had the same problem with yours.
Good video, but I have the same car and when I removed the downstream O2 sensor harness on the left side of the car engine compartment under the AC tubes, it had a FEMALE CONNECTOR. All the downstream harnesses I saw online were male. What gives?? I'm thoroughly confused. (I know that I could just buy an O2 sensor with a female jack and use that, but I'd I'd really like to know what's going on). Some clarification, please.
I have a 05 with engine light on, says I need catalytic converters, they seem very difficult to reach, I'm thinking of 1st changing the 02 sensors 1st. Seems hard also. My pilot has 339,000ml..still runs great
If the code is p420 definitely change the cat....but changing the O2 sensor is not going to hurt either if anything it will help with the long term performance of the car
I'm getting a 0132 code indicating high voltage on sensor 1 bank 1.... I have a 2004 Pilot, and want to make sure that bank 1 is closest to the firewall, and sensor 1 is the upstream/pre-cat sensor... I replaced the pre-cat sensor but the code is still coming up... Advice?
Thank you for the video. Do you have a source of supply for the O2 sensors, break free socket and torque wrench? Also those AUX LED lights look boss, how about a video on those?
ASkiingHippo , glad it helps, supplies (O2 sensors and tool) i got from Amazon they were fairly inexpensive just make sure you get the direct replacement and NOT the universal kind if you get the universal kind its very likely that you will need to spice the wires to match your connectors, just not worth the extra few bucks you'll save, and the torque wrench is from Harbor Freight tools i got it on sale for $20 and it has served its purpose and more, I wish i had made the video for the AUX lights, (also from amazon) I needed to remove the bumper cover to make the install but worth the effort.😊
Limited-time deal: Nilight - 60002F-B Led Light Bar 2PCS 36w 6.5Inch Flood Led Off Road Lights Super Bright Driving Fog Light Boat Lights Driving Lights Led Work Light for Trucks,2 Years Warranty www.amazon.com/dp/B00IZ9VAOI/ref=cm_sw_r_cp_api_glt_fabc_2VFD3HTW1E2W7N4G7F34
As requested, link to what LED I used for the Fog lights Limited-time deal: Nilight - 60002F-B Led Light Bar 2PCS 36w 6.5Inch Flood Led Off Road Lights Super Bright Driving Fog Light Boat Lights Driving Lights Led Work Light for Trucks,2 Years Warranty www.amazon.com/dp/B00IZ9VAOI/ref=cm_sw_r_cp_api_glt_fabc_2VFD3HTW1E2W7N4G7F34
You glossed right over the upstream one. Okay I've got the disconnect wire that you spent 5 minutes going over and now I'm just stuck in limbo cuz you never specified what comes next. You immediately jump to the downstream one. Where the hell is bank 1 sensor one freaking O2 sensor thing. I got the wire disconnected from the harness but I don't see the f****** thing
Check/clean the MAP sensor and change your air filter. Running rich on bank 1 side of the cat will eventually ruin the 02 sensors or cat. The Honda engines with MAP and no MAF sensors are very sensitive to air pressure coming into the engine. A very dirty TB or air filter can trigger a p0172. Your other issues can be a bad or leaking injectors, or a bad fuel regulator. So start with checking and changing your air filter. Use MAF cleaner to clean the MAP sensor located on top of the TB. Hope that helps. Definitely get a copy of the service manual. Will help guide you how to properly diagnose that issue and check various things to try and pinpoint what's causing it. For me, it was a dirty MAP and Air Filter. I had replaced it recently, but due to forest fires in the past year, it got dirty real fast. You'd be surprised how the small stuff you least expect can cause a CEL. I've had this intermittent issue for a year. I didn't have a vaccum leak. I also check my fuel pressure and it was within spec. I almost replaced the fuel injectors at one point. So definitely start with the inexpensive stuff first. You don't want to just throw parts at it.
Do you know if this is the same for an 07 Honda Pilot? I would like to do this myself. I’ve successfully done most of the work on my truck myself ie brakes, rotors, calipers, spark plugs, air filter, window regulators by following RUclips videos but can’t seem to find a vid on 07 Honda Pilot O2 sensors.
My 2015 Honda Pilot doesn’t have any engine power. When I accelerate I have to get it up to speed gradually and sometimes I smell gas and fumes through the vents. Anyone know why? Thanks
dre42atl It sounds like the engine “fuel starved” and the fuel is not being burned properly, a few things may cause it, with this model year they have the Variable Cylinder Management (VCM) start with that.....from there it could be a faulty fuel pump (happened to my pilot 04’ where i would have a hard time accelerating without getting a misfire), Clogged injectors/faulty Injector solenoids (thats why your not getting power on demand and has the smell of unburned fuel,), faulty ignition coils/spark plugs (not having enough juice to burn all the fuel hence the smell of fuel and lack of power) dirty fuel that caused clogging of throttle body and intake (explains lack of power) defective mass air flow sensor (incorrect ratio of fuel and air explains the gas smell), air filter needs changing (also for proper fuel-air ratio) or it could be simply a vacuum leak or worse an ECU problem......if I was to try anything i would start with a tuneup, you can get some ignition coils online and get your spark plugs replaced. Probably spend $100, Then have the injector, throttle body and intake cleaned. This is all granted that the VCM is working properly. Hope this helps and you find the issue🙂
@@kaizenbicyclesandauto4963 I changed upstream and downstream o2 sensors, I still have check engine code for both, I guess I got low end sensors from Amazon.
David Dao , could be defective but unlikely, is the error code specific to the upstream O2? If it is then it could be defective, Because if you are also getting the code P1349? It means that the valves spacing are getting tight so you may also need a valve adjustment🙂
Slackerz Sincity for the 2004 model the O2 sensors are inexpensive, from my personal experience the 2005 (Pilot, Odyssey, Ridgeline engines) and up, the O2’s are 3-4 times more...but if you have the 2003-2004 model, the parts are not that expensive and you can get the parts on Amazon or other online stores, as long as you get the exact part #’s that I got, they are plug and install, no cutting and soldering involved. The parts including the removal tool was around $70-$80🙂
thank yoj for the vedeo my cuestion is the bank 2 sensor 2 come with 2 pieces one in the front ingine compartiment an anothe in the from the bottom is for a honda rigeline.
Thanks for the video lesson. mine is 03. Just to give back some, Use an upholstery trick for feeding the wiring harness. Either tape or wire the new connector to the old o2 sensor before you pull it out or fish through the path with wire to hold the new connector and pull back up.
Thanks...that is such a good reminder strategy that can be used in so many different situations.
Wow bro. I'm impressed. I have a 2004 with 285K. She runs like a champ still. Love this truck.
Very helpful! Thanks for showing the location and the tab details on male and female. Took me an hour and $25 to replace it. It would not take more than 15-30 min if the connector had not been in that tight spot which is difficult to reach even with one hand. But finally did it using thumb for female connector tab, and pointer for male.
Thanks for the post. I have an '03 and this was the only helpful video I could find. My wife's Pilot has been through two teen drivers and many family vacations so the exterior is nowhere near as nice as yours.
Nice job!!
aren't you from WCW?
IMPORTANT UPDATE
For disconnecting the O2 sensor plugin for the upstream sensor (on a bracket with two electrical plugins): remove the bracket using a 12mm socket. Do not attempt to unplug the old sensor until you remove the bracket. Why? The sensor plug-in has two tabs that must be manipulated to disconnect it. One tab that is visible disconnects the sensor from the wiring harness. A 2nd tab at the opposite corner disconnects the sensor connector from the bracket. By examining the new replacement sensor wiring connector, you can see exactly what I am talking about.
Yep...Thanks..much easier.
Thank you! I have a 2003 at 250k that needed this done.
Some tips: To get those nasty white wire harness clips off you can get the lower one pretty easy with your fingers or some needle nose pliers. the barbs are side to side. On the upper on they are top and bottom. I tried for a long time with my hand squeezed in there and then gave up. When under with a slip bar and pried it off. You can bend the barbs back in place after you get it out. If damaged too much just zip tie it on the bracket. Not worth the hassle and back ache to worry about. Using a wobble socket extension with a O2 socket helps to getting the sensor off safely.
Good job man! Good documentation. I have only a few days before smog check & state registration. Now I have faith that I can do it reasonably. Also, I think I will try dropping a string through to thread the cable.
Just wanted to say "thanks" for the donation of your time and energy posting this video - very helpful!
Tnx for the video, I have a 2003 Pilot, just wondering if replacing these 2 sensors would make any difference in fuel consumption as mine only gives me about 15 mpgs, I’m trying to get it to improve on that department as fuel prices are through the roof
Thanks a million. Only video with the setup that I have.
Good job bruh. Am a mechanic, love from Nigeria ❤
Thank you so much for this. Thanks for giving back. I changed my catalytic converter and my sensor and I still have the erro code 420 and until this video I had no idea there was an upstream sensor. So I ordered the two of the exact ones you listed. Thanks again, that had to be my problem that I never changed the upstream with 250,000 miles
Yeah ur car is definitely smoking
Thanks for the details. I agree with the other comments that this was a good video. Keep filming!
Excellent video, thanks! I was looking at the wrong plug!
Thank You! It was tricky but your video was the key for me. Best Regards!
Thanks for your video. I found it to be very helpful.
Good on you for posting this video. Thanks
Good video. Thank you. It might be most helpful to describe the plug(s) you're talking about (like "4 pin" or "6 pin") to clarify. Also, mentioning O2 sensor tool size (i.e. 22 mm which is 0.8661" or simply 7/8 which is 0.875") is also useful. In referring to "upstream" and "downstream" sensors, what is the point of reference? The engine or exhaust pipe directly off the engine? For the '04 Honda Pilot, the Upstream (Part 234-4368) is located on the exhaust pipe, while Downstream (Part 234-4601) is mounted on the Catalytic Converter. Both Upstream and Downstream sensors are 4-pin plugs.
Thanks for your time!
Awesome video! I have an 03 pilot and I have problem that every morning If I don’t warm it up then put it on reverse or gear it dies. By any chance did you had the same problem with yours.
Good video, but I have the same car and when I removed the downstream O2 sensor harness on the left side of the car engine compartment under the AC tubes, it had a FEMALE CONNECTOR. All the downstream harnesses I saw online were male. What gives?? I'm thoroughly confused. (I know that I could just buy an O2 sensor with a female jack and use that, but I'd I'd really like to know what's going on). Some clarification, please.
Thank you!
I like the headlights. Aftermarket?
Yeah amazon🙂
I have a 05 with engine light on, says I need catalytic converters, they seem very difficult to reach, I'm thinking of 1st changing the 02 sensors 1st. Seems hard also. My pilot has 339,000ml..still runs great
Some say you may need to stick with denso or oem. Aftermarket may not fix it.
If the code is p420 definitely change the cat....but changing the O2 sensor is not going to hurt either if anything it will help with the long term performance of the car
I'm getting a 0132 code indicating high voltage on sensor 1 bank 1.... I have a 2004 Pilot, and want to make sure that bank 1 is closest to the firewall, and sensor 1 is the upstream/pre-cat sensor... I replaced the pre-cat sensor but the code is still coming up... Advice?
Thank you for the video. Do you have a source of supply for the O2 sensors, break free socket and torque wrench? Also those AUX LED lights look boss, how about a video on those?
ASkiingHippo , glad it helps, supplies (O2 sensors and tool) i got from Amazon they were fairly inexpensive just make sure you get the direct replacement and NOT the universal kind if you get the universal kind its very likely that you will need to spice the wires to match your connectors, just not worth the extra few bucks you'll save, and the torque wrench is from Harbor Freight tools i got it on sale for $20 and it has served its purpose and more, I wish i had made the video for the AUX lights, (also from amazon) I needed to remove the bumper cover to make the install but worth the effort.😊
Nice! Panalo!!
Quick question can u leave a link on where u got those bumper lights ?
Limited-time deal: Nilight - 60002F-B Led Light Bar 2PCS 36w 6.5Inch Flood Led Off Road Lights Super Bright Driving Fog Light Boat Lights Driving Lights Led Work Light for Trucks,2 Years Warranty www.amazon.com/dp/B00IZ9VAOI/ref=cm_sw_r_cp_api_glt_fabc_2VFD3HTW1E2W7N4G7F34
As requested, link to what LED I used for the Fog lights
Limited-time deal: Nilight - 60002F-B Led Light Bar 2PCS 36w 6.5Inch Flood Led Off Road Lights Super Bright Driving Fog Light Boat Lights Driving Lights Led Work Light for Trucks,2 Years Warranty www.amazon.com/dp/B00IZ9VAOI/ref=cm_sw_r_cp_api_glt_fabc_2VFD3HTW1E2W7N4G7F34
Does it work for 03 Honda pilot
Thanks for the video. I got a P135 O2 Sensor heater circut bank 1 Sensor 1. Does anybody know if that is the downstream or the upstream sensor.??
its upstream
You glossed right over the upstream one. Okay I've got the disconnect wire that you spent 5 minutes going over and now I'm just stuck in limbo cuz you never specified what comes next. You immediately jump to the downstream one. Where the hell is bank 1 sensor one freaking O2 sensor thing. I got the wire disconnected from the harness but I don't see the f****** thing
I have a P0172 code. Will replacing my 02 sensor fix it?
No. Engine is running rich. Probably either a vacuum leak or the fuel pressure regulator is stuck closed.
Check/clean the MAP sensor and change your air filter. Running rich on bank 1 side of the cat will eventually ruin the 02 sensors or cat.
The Honda engines with MAP and no MAF sensors are very sensitive to air pressure coming into the engine. A very dirty TB or air filter can trigger a p0172.
Your other issues can be a bad or leaking injectors, or a bad fuel regulator.
So start with checking and changing your air filter. Use MAF cleaner to clean the MAP sensor located on top of the TB.
Hope that helps. Definitely get a copy of the service manual. Will help guide you how to properly diagnose that issue and check various things to try and pinpoint what's causing it.
For me, it was a dirty MAP and Air Filter. I had replaced it recently, but due to forest fires in the past year, it got dirty real fast. You'd be surprised how the small stuff you least expect can cause a CEL.
I've had this intermittent issue for a year. I didn't have a vaccum leak. I also check my fuel pressure and it was within spec. I almost replaced the fuel injectors at one point. So definitely start with the inexpensive stuff first. You don't want to just throw parts at it.
Do you know if this is the same for an 07 Honda Pilot? I would like to do this myself. I’ve successfully done most of the work on my truck myself ie brakes, rotors, calipers, spark plugs, air filter, window regulators by following RUclips videos but can’t seem to find a vid on 07 Honda Pilot O2 sensors.
Just follow the exhaust manifold you will find the o2 sensor, the newer engine if not mistaken have 4 sensors 2 upstream and 2 downstream
Did it fix the issue
Where is the other sensor located ?
@@bstar1 on the catalytic converter
Socket size
My 2015 Honda Pilot doesn’t have any engine power. When I accelerate I have to get it up to speed gradually and sometimes I smell gas and fumes through the vents. Anyone know why? Thanks
dre42atl
It sounds like the engine “fuel starved” and the fuel is not being burned properly, a few things may cause it, with this model year they have the Variable Cylinder Management (VCM) start with that.....from there it could be a faulty fuel pump (happened to my pilot 04’ where i would have a hard time accelerating without getting a misfire), Clogged injectors/faulty Injector solenoids (thats why your not getting power on demand and has the smell of unburned fuel,), faulty ignition coils/spark plugs (not having enough juice to burn all the fuel hence the smell of fuel and lack of power) dirty fuel that caused clogging of throttle body and intake (explains lack of power) defective mass air flow sensor (incorrect ratio of fuel and air explains the gas smell), air filter needs changing (also for proper fuel-air ratio) or it could be simply a vacuum leak or worse an ECU problem......if I was to try anything i would start with a tuneup, you can get some ignition coils online and get your spark plugs replaced. Probably spend $100, Then have the injector, throttle body and intake cleaned. This is all granted that the VCM is working properly. Hope this helps and you find the issue🙂
How did you remove the upstream connector? Was it difficult?
Not really with the proper tool its not a hard task, you will need space to get some leverage though
@@kaizenbicyclesandauto4963 I changed upstream and downstream o2 sensors, I still have check engine code for both, I guess I got low end sensors from Amazon.
I bought the same sensor for the upstream and still get a heal malfunction error. Could it be that the sensor i got is faulty?
David Dao , could be defective but unlikely, is the error code specific to the upstream O2? If it is then it could be defective, Because if you are also getting the code P1349? It means that the valves spacing are getting tight so you may also need a valve adjustment🙂
could be your wiring harness going to the computer.
Lol “anti seizure”
IKR 😂😂😂
Man how do you get those for under 100$ there over 100$ each.
Slackerz Sincity for the 2004 model the O2 sensors are inexpensive, from my personal experience the 2005 (Pilot, Odyssey, Ridgeline engines) and up, the O2’s are 3-4 times more...but if you have the 2003-2004 model, the parts are not that expensive and you can get the parts on Amazon or other online stores, as long as you get the exact part #’s that I got, they are plug and install, no cutting and soldering involved. The parts including the removal tool was around $70-$80🙂
Pong Pagong what’s the part number please, I want to see if it matches mine
Slackerz Sincity 5:03 into the video those are the part#’s the I used😊
Covering your license plate with a towel...
A sign of paranoia lol
Velizar Milutinovic 🤪
thank yoj for the vedeo my cuestion is the bank 2 sensor 2 come with 2 pieces one in the front ingine compartiment an anothe in the from the bottom is for a honda rigeline.
Thank you very much.