I received a P1717 code and a flashing "D" on the gear display. After researching these threads to find the most popular resolution, I decided to change the transmission position sensor. Unfortunately, I couldn't find instructions in the threads, so I'm posting what I learned from when I changed it this morning.


This is for the 2007 Acura TL Type S. The part was $74 delivered, and is called SENSOR ASSY., POSITION - 2007 Acura TL (28900RYF023).







The part number is #9, shown above. It is located slightly forward of the front left tire. The photos below show up as up (they are not rotated).


Step 1, lift the car from the front left, and always use at least one jack stand. Remove the tire. Remove the 13mm nut after bending the lock tabs back. Remove the transmission cable. See below.








Before removing the 10mm bolts, loosen the 22mm nut. You will only need around a half turn or so to loosen the compression fitting. Remove the 10mm bolts, then pull the old sensor off of the shaft. See below.






Finally, remove the electrical connector by carefully rotating the white clip portion. See below.








Connect the plug to the new sensor and place the sensor onto the shaft, making sure it is all the way on. Start with the 22mm nut. When tightening the 22mm nut, the transmission will likely shift. Let it click a few times, then tighten the nut until the sensor grips onto the shaft. You shouldn't be able to pull the sensor off at this point. Install the two 10mm bolts.


Rotate the transmission shaft counterclockwise with an open ended wrench until it returns to its original position (Park). Attach the transmission cable and tighten the 13mm nut. Be sure to bend the lock tabs back into place.


All done. Everything is working fine on mine so far, so I must have done it right. Feel free to add more detail or post corrections if you have some. This was my first time doing this, and without instructions, I was able to complete the job in around an hour.


Enjoy!

 

What exactly does this sensor do? I just go an 08 Type-S and my trans goes in and out of gear and seems to shift fine, but I hear a clicking sound every time I take off from a stop, most of the time a double click, not very loud, and I do sometimes notice the click when I'm coming to a stop. I also hear the gear shift lock on the console click as well. Is this my issue?

 

it send information to the computer and tell whether or not down shift or up shift when this goes bad my TL start to shifting funny (no slip) but the gear is all over the place (erratic shifting) some time cause the gear to shift hard during city traffic.

 

I have the TL Type-S and since I got it I keep hearing the click every time I go from P to R or D and also when I take off and start driving it, today I noticed the clicking a little bit louder and there's is a delay when switching gears, I called an auto shop specialized in ACURA and I will find out more I hope, I will share with you what happened.

 

My Acura is a 2008 model and it has 92K miles on it, all services get done in the dealer, this is the first time I'm taking it to a specialized Acura auto shop and that will take place next Monday the 17th

 

Why did you end uo having to change this sensor? Symptoms?

Do we know if this position sensor would fix a back-up camera that works intermittently?


Do you hear the click through all the gears? (obviously at speed, the wind would be a factor) I heard this click when I first got my 07 tl-s. My boy at the dealer said it was just the rear brake moving in and out of place.

 

Symptoms...

Erratic shifting, check engine light with a code, if you in manual mode and floor it the gear indicator flashing and the car will hesitate to accelerate for a sec. If you in manual shifting mode and you manually input to up shift before red line and the car fail to do so.

 

I decided to change the sensor because of the symptoms in my original post (P1717 code and a flashing "D" on the gear display). The transmission seemed to work fine otherwise, but I didn't want to get stranded. It seems reasonable that the back-up camera would rely on the transmission position sensor for activation. I've been under the center console to replace the cup holder cover, and don't recall noticing any sensors in that area.

After replacing the rear brake pads, I had the clicking problem as well, but only when moving from forward to reverse or vice versa. I sold the car around two years ago, still miss it.

 

 

I left mine in park and make sure you use a marker mark the exact position of the old sensor prior removal (take a picture) and when you reinstall make sure you put it back exactly the way it was or the car will be jerky when you shift from P to D.

If you look at OP pic you will see the metal tab that is pointy that what I am talking about.

 

The '07 base may have a different procedure to replace the sensor. I vaguely recall that I found information online on how to change it on the base model, but not the Type S.

I put mine in park, but I'm fairly sure I knocked it into another gear by accident while removing the sensor. It's been a while, but I believe I just rotated the shaft all the way back to the park position before reassembling. Taking photos before and during the work helped. Be safe... chock your wheels, apply the parking brake, and use jack stands before working under the car.

 

Hello – helpful thread. I would like to share my experience with my 07 Acura TL Type-S for check engine light on. I love the car having owned it for over 11 years with no major issue. Only a few months ago, it came up with flashing D and check engine light while driving. I kept on driving home and then took it to AutoZone the next day to get the code read out. It came up with code P1717 that referred to Neutral Safety Switch. A salesperson at AutoZone told me he does not think it is a problem with Neutral Safety Switch. It might have something to do with fuel. He sold me two bottles of Lucas fuel treatment to try it out. I emptied one bottle into the gas tank and filled up the tank. I drove to work. I got out of work, started the car and I noticed the Check Engine light was gone. Approximately three months later, the light came back again with the same code P1717. I poured another bottle of Lucas fuel treatment into the tank and filled up the tank, drove to work and Check Engine light had gone away. I ordered Neutral Safety Switch in case that actual piece is bad and I can replace it. For now, let us hope the light will not come back until next time.

 

Your first mistake was taking advice from auto zone...lol. It is the gear selector switch aka neutral safety switch, it has nothing to do with fuel. Replace the sensor and you will be good. There is an intricate procedure to replace it to make sure the switch is aligned properly. Plenty of youtube videos out there on how to do it. Not very hard at all.

 

Here is a link on AZ about it.
​​​​​​https://acurazine.com/forums/3g-tl-p...-light-909218/

 

tpz76 - thank you for your advise. I'll keep in mind. When check engine light comes back on with code P1717 again, I'll replace the gear selector switch. HAPPY THANKSGIVING..!

 

will this part number fit a 07 base TL

 

https://www.oemacuraparts.com/oem-pa...on-28900ryf023

you know, a little work on your end won't kill you.. All you have to do is go to a parts site, put in the part number and then you can scroll down and see what car it fits on. Alternatively, you could go to the same site, type in your car year and model and also get to the same conclusion.

 

^^^^ but I like to be spoon feed.

 

so you left your gear at park correct I’ve ready somewhere else to put gear in neutral ?

 

spoon Fed** 😂😂😂

 

For those who want to save money just open old part and use a pencil eraser to clean contacts should be good as new after

 

Good idea, assuming electrical contact cleaner would be preferable but can't beat the price of a good ol' #2 Ticonderoga. Will keep in mind if I ever have this issue.

To the guys that have clicking on stop start have a passenger wait outside of the car while you replicate the issue. If it isn't brakes it could be motor/trans mounts.

 

the eraser is very light abrasive i used electrical cleaner afterwards just to clean any residue from eraser etc this is a old trick i learned as a kid cleaning toy train tracks

 

I know this is a zombie thread, but this is the task I'm up against right now. I've taken off the front wheel and I've looked at it from above. For anyone who's done this job, did you have to remove the wheel well lining? I can't imagine any other way the OP got those photos. Coming at it from above I would have to remove the battery and the floor pan for the battery. I started on this, but I haven't figured out where the last bolt or two are that hold the floor pan in place. Right now my only real challenge is access, so I'd appreciate a tip or two on the best option.

 

Getting battery tray out is tricky, as there are two bolts on the bottom holding it where you can't really see. You need to go by feel.



If lifting the car and taking the wheel off is not a problem, I would go from there, and remove the fender liner.

 

You don't have to remove the entire fender liner. 2 clips and a 10mm bolt that will get you access to the sensor, make sure to check and double check before put everything back and don't forget to stake the nut.