cannot disconnect a/f sensor wiring harness - Drive Accord Honda Forums | radio-pro.ru
LinkBack Thread Tools Search this Thread Rate Thread Display Modes
post #1 of 8 Old 04-21-2010, 06:39 PM Thread Starter
1st Gear

Join Date: Apr 2010
Posts: 4
Thanks: 0
Thanked 1 Time in 1 Post
cannot disconnect a/f sensor wiring harness

Hi all,
I'm a noobie here and I'm ashamed to ask this question but I'm stuck and don't want to damage my car anymore than I have to. I have a 2003 Accord EX V6. It threw a 2247 CEL code. Its the first Air Fuel Ratio Sensor right infront of the front exhaust manifold.

I cannot get the doggone wiring harness to disconnect.

Its the front A/F sensor (Bank 2) 8P connector. I push down on the clip and but won't pull apart. Fingers are bleeding....

Its also connected to a metal bracket that also holds the harness for the secondary sensor further below. I'm wondering if I have to disconnect the full harness as a single unit from this metal bracket. But even THAT can't seem to come off.

Is there some magic to this? I tried to pry apart with a flat screwdriver but I'm beginning to bend the plastic part of the harness, close to breaking it.

Please help!!

JustinTime is offline
Advertisement

post #2 of 8 Old 04-22-2010, 01:54 PM
5th Gear

Join Date: Mar 2009
location: Hartford suburb, CT
Posts: 663
Thanks: 0
Thanked 12 Times in 10 Posts
I tried myself once without leather gloves and failed to disconnect and left my arm bleeding as well. I would recommend use gloves. I think no need for special tool. Just hold on one side of connector and pushing down the clip pull on another side.
You will need a special O2 sensor socket wrench to remove the sensor (Snap-on YA8875, SP Tools 93750, or equivalent, commercially available).

Attached Images

Honda Accord hybrid '07
without NAVI Silver 198k miles - sold
Honda Accord Touring '13 MSM
drozzin is offline
post #3 of 8 Old 04-22-2010, 02:15 PM
Moderator

Join Date: Feb 2009
location: Omaha, NE
Posts: 5,554
Thanks: 3
Thanked 38 Times in 35 Posts
It's definitely a PITA. Nothing magical about it, just takes a few goes.

2014 MSM Accord Sport Sedan 6M
sodaks2k is offline

post #4 of 8 Old 04-23-2010, 07:04 AM Thread Starter
1st Gear

Join Date: Apr 2010
Posts: 4
Thanks: 0
Thanked 1 Time in 1 Post
Thanks to you both. Well, I went ahead and ordered a Denso replacement (234-5010) and was planning to take a close look at the new plug in hopes of figuring out the latching mechanism. But I'll give it another try either way. At least now I know its not just me.

Thanks.
JustinTime is offline
post #5 of 8 Old 04-23-2010, 08:55 AM
Moderator

Join Date: Feb 2009
location: Omaha, NE
Posts: 5,554
Thanks: 3
Thanked 38 Times in 35 Posts
Quote:
Originally Posted by JustinTime View Post
Thanks to you both. Well, I went ahead and ordered a Denso replacement (234-5010)

Hopefully you can take it back. A quick search and you would have discovered that the denso's are pretty much worthless. They often crap out within a year. Go with an OEM one.


2014 MSM Accord Sport Sedan 6M
sodaks2k is offline
post #6 of 8 Old 04-23-2010, 02:28 PM Thread Starter
1st Gear

Join Date: Apr 2010
Posts: 4
Thanks: 0
Thanked 1 Time in 1 Post
Quote:
Originally Posted by sodaks2k View Post
Hopefully you can take it back. A quick search and you would have discovered that the denso's are pretty much worthless. They often crap out within a year. Go with an OEM one.

I did a search but its so hard with so much contradictory stuff out there. Engine Check - Oxygen Sensor? (Gen 7)

I thought I just needed to avoid the universal ones. I think in that post you recommended Bosch or Denso. Others said Denso was OE.

I think the one I got has the 8pin plug and everything.
JustinTime is offline
post #7 of 8 Old 04-23-2010, 07:40 PM
Moderator

Join Date: Feb 2009
location: Omaha, NE
Posts: 5,554
Thanks: 3
Thanked 38 Times in 35 Posts
Quote:
Originally Posted by JustinTime View Post
I did a search but its so hard with so much contradictory stuff out there. Engine Check - Oxygen Sensor? (Gen 7)

I thought I just needed to avoid the universal ones. I think in that post you recommended Bosch or Denso. Others said Denso was OE.

I think the one I got has the 8pin plug and everything.
Hmmmm, you're right I did say that. Maybe it's more common for them not to work well on the 6th gens.

2014 MSM Accord Sport Sedan 6M
sodaks2k is offline
post #8 of 8 Old 04-26-2010, 12:08 PM Thread Starter
1st Gear

Join Date: Apr 2010
Posts: 4
Thanks: 0
Thanked 1 Time in 1 Post
FWIW, I was able to get the plugs to disconnect.

For the OEM plug, the whole unit MUST be removed from the metal hanging bracket before disconnecting. The bracket locks the two plastic plugs together. Since the back of the plug unit is so hard to see (because of the tension in the wires of the other things mounted on the bracket) it took a while to figure out.

Basically, there is a little tab on the rear of the plug facing the engine near the bottom of the plugs. That needs to be slightly pulled out (away from you, towards the engine). The whole unit then slides right off the bracket. Then the plugs easily disconnect.

Its like the old Far Side cartoon with the kid pushing, all tired and sweaty, at the entrance to the school for the mentally gifted, and there's a little sign that says "pull". I kept pushing and pushing on the part I couldn't see when all I needed to do was pull.
JustinTime is offline
The Following User Says Thank You to JustinTime For This Useful Post:
aafradio (07-24-2014)
Advertisement

Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Drive Accord Honda Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
The answer to the random question may be found under the Off Topic section of the forums and in the "Drive Accord Forums" category.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools Search this Thread
Show Printable Version Show Printable Version
Email this Page Email this Page
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Linear Mode Linear Mode
Rate This Thread:



Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to


Related pages


2014 honda accord v6 gas mileage2002 honda odyssey transmission filtertakeda filterhow to change blower motor resistorfront wheel wobblehonda accord 1997 reviewfront compliance bushings honda pilottransmission for a 1998 honda accordisimple bluetoothhonda trunk trayhfp emblem2001 honda accord front bumperwhat is alloy wheel offsethonda accord custom interiorhonda crv oil life indicatorcarproof couponaudiovox mediabridgecommonwealth honda lawrence2003 honda accord radio code resethow much should a clutch replacement cost2005 honda civic trunk latchattaching front license plate without drilling holesacura tl high mileagedelray acurasunroof explodedparrot ck3100 fitting instructionssqueaky clutch8th gen civic air suspensionhonda civic si seats for salekeyless remote not workingcooper tires mastercraft reviews2004 honda accord coupe front bumper2003 acura tl lip kitntk o2 sensorstraining button on garage door openerclass action lawsuit against hondahonda accord brake light2004 honda civic ex oxygen sensorpcv air oil separatorpcm reflashgm 3.6l timing chain failurebad camshaftrain x latitude 24how to install snapshot progressivestance honda2001 honda civic transmission slippingradar rpx900dyno drive motor2012 honda crv battery issuesvalet key cabinethow much for power steering flushaswc axxesssaturn automatic transmission problemsin dash ipad mountcatalytic converter 1998 honda accordjl g1700sills hondabeer shift knobtanabe nf210 lowering springstpms honda fitcar stereo faceplate not workingk&n typhoon short ram intakepinstripe eraserwhen the vtec kicks in2007 honda accord cabin air filtertire height chartxentec installation guidehigh performance radiator6.5 speaker baffles2002 honda crv gas mileagehonda odyssey maintenance minderairrex suspension2002 honda accord horsepowertire rack hankook