p0705 code???? help??

[DINOeggxo]

so this code came up the other day while out for a drive. have cleared it twice now and it keeps coming back.

the car is a 2007 hatch with automatic transmission. It still shifts through all the gears fine, starts normal, drives normal(even with the CEL on), everything seems normal but its giving a CEL.

aside from the suspension and JDM tail lights the car is completely stock.

everything has been fine, i noticed the light came on the day after i installed my JDM tail lights. could 2 wires touching back there cause an issue? because when we installed them we hit a bump and the blinker/reverse light pins were touching. probably not related but maybe?

where should we start looking? we know there is that switch thing on the transmission. anything else we should look at/try before we just start throwing money at it.

[CTScott]

That error is an issue with the PRNDL feed from the shifter to the ECM, so it could potentially be related to your shorting. Does the gear indicator still show properly on the cluster?

[DINOeggxo]

That error is an issue with the PRNDL feed from the shifter to the ECM, so it could potentially be related to your shorting. Does the gear indicator still show properly on the cluster?

i don't have a gear indicator on my cluster...

[CTScott]

i don't have a gear indicator on my cluster...

You should, next to the fuel gauge. If it is not there, check the 10A GAUGE fuse in the fuse panel under the bottom of the dash.

[sasquatch]

You should, next to the fuel gauge. If it is not there, check the 10A GAUGE fuse in the fuse panel under the bottom of the dash.

Ill check when she gets home from work. I'm thinking and I don't really remember seeing a gear selector on the cluster. Unless I've just never cared enough to look for it

[sasquatch]

Alright: checked the fuses under the dash. Nothing blown.

Pretty sure her 07 does not have the gear indicator on the dash. She says she never had one.

Cleared the codes, started the car, cycled through the gears, rescanned and there was the code pending again.

I'm assuming the problem is with that thing on the transmission. Does anybody know its actual name so I can replace it? Seems pretty straight foreword and easy.

Anything else it might be before we start throwing money at it?

[sasquatch]

Alright: checked the fuses under the dash. Nothing blown.

Pretty sure her 07 does not have the gear indicator on the dash. She says she never had one.

Cleared the codes, started the car, cycled through the gears, rescanned and there was the code pending again.

I'm assuming the problem is with that thing on the transmission. Does anybody know its actual name so I can replace it? Seems pretty straight foreword and easy.

Anything else it might be before we start throwing money at it?

[CTScott]

Alright: checked the fuses under the dash. Nothing blown.

Pretty sure her 07 does not have the gear indicator on the dash. She says she never had one.

Cleared the codes, started the car, cycled through the gears, rescanned and there was the code pending again.

I'm assuming the problem is with that thing on the transmission. Does anybody know its actual name so I can replace it? Seems pretty straight foreword and easy.

Anything else it might be before we start throwing money at it?


That does sound familiar with the 07's not having the gear displayed (08+ definitely does though).

The switch on the tranny that the shifter drives is the Switch Assy, Neutral Start (84540-46010). Although the name doesn't imply it, it feeds all of the gear positions to the ECM.

[sasquatch]

Ill call a friend at the dealer and get one ordered. Thanks for the help!

The car drives fine, must just be a bad connection or something. Lame

[DINOeggxo]

http://i5.photobucket.com/albums/y181/barspinsteve1128/Mobile%20Uploads/IMG_2093_zps892fa784.jpg (http://s5.photobucket.com/user/barspinsteve1128/media/Mobile%20Uploads/IMG_2093_zps892fa784.jpg.html)

that part number is for this thing right?

[CTScott]

No. The black connector under it. If I remember correctly the gray one is the connection to the valve body.

[sasquatch]

Ok ill look at it tomorrow and see how easy it looks to replace.

The part number you posted is for the correct part?

[CTScott]

Ok ill look at it tomorrow and see how easy it looks to replace.

The part number you posted is for the correct part?

Yes. The part number is for the part with the black connector.

[yippiiyaris]

That does sound familiar with the 07's not having the gear displayed (08+ definitely does though).

The switch on the tranny that the shifter drives is the Switch Assy, Neutral Start (84540-46010). Although the name doesn't imply it, it feeds all of the gear positions to the ECM.

Any recommendations on where to buy this part? I am finding prices anywhere from 40 - 350.

I have recently changed out my battery and alternator on a 2011 Yaris with automatic transmission and 82K miles. After I did that the CEL continued to come on after a couple of drives. The code that came up is P0705 and now the gears do not show up in the display.

I have checked all fuses and none have blown, including the 10A GAUGE fuse under the bottom of the dash. Since changing out the alternator and battery everything has been running great. The only issue is the CEL coming on and I am unable to see what gear I am in. Other than that, the engine continues to shift fine. I have also checked all connections and they are clean and firmly attached.

Thanks for any input.

[CTScott]

Any recommendations on where to buy this part? I am finding prices anywhere from 40 - 350.

I have recently changed out my battery and alternator on a 2011 Yaris with automatic transmission and 82K miles. After I did that the CEL continued to come on after a couple of drives. The code that came up is P0705 and now the gears do not show up in the display.

I have checked all fuses and none have blown, including the 10A GAUGE fuse under the bottom of the dash. Since changing out the alternator and battery everything has been running great. The only issue is the CEL coming on and I am unable to see what gear I am in. Other than that, the engine continues to shift fine. I have also checked all connections and they are clean and firmly attached.

Thanks for any input.

$350 is dealer list and is crazy expensive for the part. If you can find one for as little as $40, go for it. Someone else with the same issue took theirs apart and cleaned the corroded contacts.

[yippiiyaris]

I finally got the Switch Assy, Neutral Start (84540-46010) in and am in the process of replacing now. Here is the problem:

I got the old switch off, it was on there really good and I needed to pry it off. Now when I go to put the new one on it is just as tight if not tighter. I have cleaned the rod coming out of the transmission where it slides on and have separated the opening as wide as possible on the switch. Any ideas on how to get it back on? No room to get good whacks with a hammer. I had to use a little pry bar and hammer to get the old one off.

[yippiiyaris]

Here are a couple of pics.

I finally got the Switch Assy, Neutral Start (84540-46010) in and am in the process of replacing now. Here is the problem:

I got the old switch off, it was on there really good and I needed to pry it off. Now when I go to put the new one on it is just as tight if not tighter. I have cleaned the rod coming out of the transmission where it slides on and have separated the opening as wide as possible on the switch. Any ideas on how to get it back on? No room to get good whacks with a hammer. I had to use a little pry bar and hammer to get the old one off.

[yippiiyaris]

I was finally able to get it on. The new switch opening was a touch too small. I used a dremel grinder bit and shaved a little bit of the opening on the new switch. What a pain, but I got it on there and that finally fixed the P0705 error code and the gears are now displayed again for me.

[Cimorene]

Hello, I know this thread has been dead but I have gotten a P0705 (though with more issues that OP) on my 2007 Yaris Hatchback and am having trouble finding this part where it states it will fit my yaris but I am also not having luck finding a full list of yaris options for the hatchbacks that match what is listed on ebay. I found the part listed in this thread but I am not very experienced and want to make sure I order the correct part the first time. I can post a link to the part I was looking at but I am not sure if that is kosher on this forum and don't want to break rules. Any help is much appreciated

[WeeYari]

I can post a link to the part I was looking at but I am not sure if that is kosher on this forum and don't want to break rules.

Put up a link. No issues there.



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[Cimorene]

https://www.ebay.com/itm/OEM-84540-46010-Neutral-Safety-Switch-For-Toyota-Corolla-Matrix-Scion-xA-Yaris/253179241197

[Cimorene]

And I realized I was very vague on my car. I have a 2 door automatic 2007 Yaris but don't see any model designation beyond that. The listing has 3 different model options listed for the 2007 2 door Yaris and only says it fits the RS model. I have found parts on the brick and mortar stores websites but they all want about $300-$350 for this little part locally (they won't show pics of the front of the part on any of the websites I checked either). I am also unable to locate the part from the brick and mortar type stores by the item number listed they wont show anything looking up the OEM listed in the post. (please excuse my ignorance)

[DarkShadowFox]

https://www.obd-codes.com/p0705

[WeeYari]

I have no idea why the fitment guide would validate only RS trim level. There is no difference at all in the drivetrain amongst the different trims.

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[Cimorene]

Ok that's I wasn't sure on it I ordered my part so fingers crossed it fixes my poor little yaris. Looks like I get to find out by the end of the week. Thank You!

[DarkShadowFox]

I have no idea why the fitment guide would validate only RS trim level. There is no difference at all in the drivetrain amongst the different trims.

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because its the highest trim.