Code P0717

Hi Pickone,

The vehicle is shifting like this because it is losing the speed sensor signal so it does not know which gear to shift into.

I attached the test to determine what is causing the speed sensor issue. Please let me know if you need any more assistance as you work through this.

Thanks for the test parameters. The picture is the pickp end of the bad sensor. My concern is the potential amount of material that seems to have rubbed or broke off the end. I could hear a faint noise that sounded like a heat shield rattling but inside the tranny near where this sensor came out. Any recommendation as to dealing with any plastic or metal that may have gotten inside. When I find the correct sensor I'll have a better idea how much was missing off the old one. I'm also drawing a blank on how it broke the end like that. It's not supposed to touch.

You are correct that they are not to touch but when you get the new one, you will want to see how it compares to this one. Normally this happens when they install the wrong sensor and it is a bit to long and it wears against the trigger wheel. If it is the same, they may require a spacer ring and the last person didn't install one so it was too close to the trigger wheel.

As for the plastic that may be left inside, normally this will make its way to the pan and remain there. If it is a material that is softer then metal, then it is normally ok. If it is metal then it could cause issues. Unfortunately, there is no way to know unless there is an issue. The only way to get it out is to go in and remove it. I would not recommend this unless there is an issue after you get it back on the road.

Keep me posted and let me know if you need more help.

Well I put a new sensor in and the car started normal and as soon as I put it in gear the tinny sounding rattle stopped. I drove it and it shifted from first to second gear but as soon as it hit 20 plus mph it disengaged and the engine revved. Below 20 and it would pull it down the road. After test drive I pulled the new sensor and it was destroyed like the original one.
I got a used one from another transmission and put it in with maximum amount of spacers and it didn't read it. I dropped it down one spacer and it wanted to run better (almost 30 plus mph) but wouldn't shift into third gear. At 30 it disengaged. At that point I pulled both speed sensors and found the input sensor (short one) still physically in good shape but on the output sensor (long one) now had a slight scrape mark across it. Also there was a bit of metal shavings on both. More on the input sensor. My daughter and I looked at eleven CRV's before we bought her this one (it's her second one) and we both thought it seemed to shift smoother than all the others. Do I need to replace this transmission after she's only drove it 3,000 miles in the three months she's had it?

The metal in the sensors is the only thing that concerns me to point to a new unit. This metal is coming from somewhere and it doesn’t repair itself.

As for the damaged sensors. The only way that happens is either the sensor is wrong, installed wrong, or there is something on the tone wheel causing damage to the sensor.

Where are you getting them from and do you have a part number they are giving you for each one? I want to try and check to see if they are giving you one for the wrong unit or something silly like that.

The original input sensor that came with the car was found damaged when the problem 1st happened. The 2nd one I purchased from Honda (part#28820RWE003) came up damaged in the same manner as the original after driving a few blocks. The 3rd input sensor was installed with spacers that weren't originally there and came up undamaged but still no signal code P0717 and an additional code Intermittent Signal P0718 which wasn't there at all before. I'm thinking that was because the spacer had it too far back from the tone wheel. New to the equation was the original output sensor (the longer one) had a scrape mark across it. Not as bad as the other and not all the way thru the plastic. I'm thinking that the tone wheels are wobbling and giving intermittent readings and destroying the sensor when it's set at the appropriate distance from the tone wheel. How else could what was a working set up for so long suddenly start eating sensors? Is it heard of for the tone wheels to spin off its axis like that?

This sensor is reading on the mainshaft of the transmission so I doubt it is an issue. However, I have heard of the mounting location getting distorted but that just seems so unlikely on this application. The only thing that I can seem to think that would cause this is the bearings on the mainshaft have failed or failing causing the tone wheel being able to make contact with the sensor.

Other than that, there would have to be metal or something on the tone wheel that is coming around and hitting the sensor.

So either way the transmission has an internal issue and needs to come out probably replaced. Do you agree with replacement?

Based on what is happening, I don't see anything else either. However, I hate to make that decision without a "smoking gun" because it is not just a sensor we are talking about. However, I don't know how else to tell you to test this because if it were in my shop, I would be disassembling the transmission to inspect everything or at least disassembling until I found the issue.

With that much labor involved to dissect the transmission it would be better to just replace it. Thanks for the help.

Agreed. Thanks for using 2CarPros. Please come back and post a new thread if you have other issues and we will be happy to assist.