2012 Mercedes C250 P0705 error, transmission probs
11-20-2021, 11:03 PM
#1
Newbie
Thread Starter
2012 Mercedes C250 P0705 error, transmission probs
Hello all,
I took my Merc to the dealer after a check engine light and they read a P0705 code aka selection range sensor fault. They also read a Y3/8n4 aka fully integrated transmission control unit fault. Under this line item, they brought up the range sensor in the valve body having a high resistance. Has anyone experienced this issue and know where to look first? I’ve been reading that there can be a few different issues related to this code and I was hoping to narrow down what I need to take apart!
Symptoms include:
RPM staying higher than usual on the freeway
Loud humming when up to speed
Occasional shifting up/down at odd times. Also, semi automatic +/- is not working.
I took my Merc to the dealer after a check engine light and they read a P0705 code aka selection range sensor fault. They also read a Y3/8n4 aka fully integrated transmission control unit fault. Under this line item, they brought up the range sensor in the valve body having a high resistance. Has anyone experienced this issue and know where to look first? I’ve been reading that there can be a few different issues related to this code and I was hoping to narrow down what I need to take apart!
Symptoms include:
RPM staying higher than usual on the freeway
Loud humming when up to speed
Occasional shifting up/down at odd times. Also, semi automatic +/- is not working.
11-21-2021, 10:59 AM
#2
Out Of Control!!
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2017 GLE350 4MATIC
Welcome! Please post a photo of the C250.
11-21-2021, 02:42 PM
#4
Out Of Control!!
Join Date: Sep 2018
Location: unbegrenzt
Posts: 13,484
Received 4,003 Likes
on
3,145 Posts
2017 GLE350 4MATIC
Looks great! Nice and clean.
