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My car (2008 Civic LX automatic 4 door, 75,000 miles) starting shifting weird yesterday and the green light next do D(drive) started flashing, then my check engine light came on. I got codes P0847 and P0756. I have read MANY posts online about this common problem and most say that it's most likely a bad transmission pressure switch sensor. I figured I would buy one and swap it out, but I am not sure exactly which transmission fluid pressure switch to get. Here are the 3 options I have seen in the posts:

28600-RG5-013
28600-rpc-003
28600-rpc-004

I have read that they all work. I have also read that there are 2 locations, but I think the one I want to switch is under the car, remove the plastic guard, then it's there. I'm not exactly sure where the switch is located, but I've been watching youtube videos and reading a ton of posts. Which part number is correct? How much should I expect to pay (I've seen $10-$75)? I was going to order one from Advanced Auto just because I can use a discount code and I also have a $20 reward. Or I can buy one somewhere else if that's a better idea/better deal.

Also, I have read that I need to get a new crush washer/gasket. What is that part number? Out of 30+ posts I've read, I have yet to see what the exact gasket/washer is I should get. Last summer, over a year ago, I changed the transmission fluid and used a washer for that. Is that the same size washer? Because I have extras.

Thanks in advance for the help and the clarification on which part to get and where to install it.

 
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https://www.civicforums.com/forums/2...retailers.html

 
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Thanks for linking me to the parts pages. Anyone have any experience or advice on whether I can get away with a cheap switch or if I need to buy something more expensive? I've seen them from $10-$75. I'm kind of scared of $10 parts but I'm also not looking to spend $75 unless it's absolutely necessary.

 
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Cheap parts are cheap for a reason

 
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Is this switch ok?

https://shop.advanceautoparts.com/p/...ressure+switch

 
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I would buy a honda one

 
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Damn, I was able to get this one with a discount for $30. All of the honda parts are over $60 with shipping :/

 
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Just act like there was never a cheaper option in the first place.

 
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So... I ended up ordering a Honda switch on Ebay. I ordered the 28600-RPC-013 switch and the guy sent me 28600-RPC-004. I thought 28600-RPC-004 was a different switch, for the upper part of the transmission? I thought 28600-RPC-013 was interchangeable with 28600-RPC-003 and NOT 28600-RPC-004? Or can I use 28600-RPC-004 for both? I am changing my lower 3rd clutch pressure switch. Thanks

 
Rep Power: 519

The catalog description of those two switches in the diagram tells each is made by a different company (LINK) Functionally they are likely the same (I personally have never verified this, but I've read of others that had no problem using those part numbers).