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How to fix P0847

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24K views 5 replies 5 participants last post by  Myhdsport  
#1 · (Edited)
First off the P0847 code is the pressure switch for the 3rd clutch but if your here you probably already know that. This should be a quick an easy guide on how to save yourself a couple hundred bucks.

Part Number: 28610-R36-004 (2009 - 2020 Ridgeline Pressure Switch)

Optional Part: 90471-PW7-A00 (crush washer)

Tools: bungie cord, 22 mm wrench, 10mm socket, 10mm wrench, ratchet, screwdriver

Optional Tools: torque wrench, 20” extension, impact driver


On the driver side of the truck underneath by the wheel well there should be a large and small trim panel. Use the ten millimeter wrench and socket to remove the small trim piece. For the large trim peace only undo enough bolts and clips to where you can use the bungie cord to pull it out of the way. Don’t forget to remove the plastic clips with the screwdriver.

I have inserted a couple of drawings and guides to show exactly where on the transmission the switch is. Undue the cable and use the 22mm wrench to remove the switch.

When putting in the new switch it should be torqued down to 15 ft-lb but you will need a 20” extension. With the extension on you’ll only need to tighten it down to 14 ft-lb. But to fit in the torque wrench you need to take off the driver side wheel and the fenders inner plastic guard. That’s a lot of extra work and I’m not about that but thought I would put that in here.

Once you screw the switch back in, make it snug with the 22mm wrench but do not over do it. Then put every thing back together and your good to go. The car will work right again after installing the part but you will need to find someone with a nice scan tool to wipe the code.

This video is a tutorial for a 2011 pilot but the repair is practically the same.

This video is for a 2006 Honda Ridgeline. Note that the 2006 Ridgeline has a different pressure switch then the 2009 plus. Other that the repair is almost the same.

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Good Luck!
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P.S. Do not do this on a warm car. After you take out the old switch you will need to plug the whole with your finger. Transmission fluid can get very hot to say the least. I found out the hard way.
 
#2 ·
Update

I have had this issue on my truck for about 4 years. I was just lazy and never got to fixing it till now. I’m glad to report that there are little to no long term effects of not fixing this. I was not able to notice any weird shifting while driving around town or while I’m driving dangerously and recklessly.

With that said I towed my mustang and trailer yesterday and that weights around 6,000lb. Going in and out of third with the car and trailer was clunky but not bad. I was doing about 65 or 70 on the highway.

Overall the truck feels back to normal!