Code p1728 random OD light flash rough shifts
Thread Starter
|
2nd Gear
Joined: Nov 2024
Posts: 2
Likes: 0
Code p1728 random OD light flash rough shifts
Hey all,
If this has been posted before by someone else forgive me as I’m new here. My OD light has been randomly flashing and hard shifts in 1st and 2nd. Shifts fine when the light is off. It’s very random but more prominent going up slight hills. If I turn the truck off and back on it’s like it never happened.
It’s been going on for a couple years just getting annoyed by it. I got FORScan as the Ford dealer I went to said they didn’t know to read the codes for it. (Seems odd to me.) I’m not sure if it makes a difference but I scanned it when the OD light was not flashing.
FORScan reads:
Code: P1728 - Transmission Slip Fault
Module: Powertrain Control Module
Diagnostic Trouble Code details
Transmission Slip Fault
internal mechanical/hydraulic failure
I was thinking ABS/VSS sensor on the pumpkin as my speedo jumps everytime the light comes on but I’m not sure what the fix is for that code. I replaced with a speed sensor and checked wiring at the plug with no change. I appreciate yalls help.
Peyton
1995 F-350 7.3 XLT CCLB E4OD
If this has been posted before by someone else forgive me as I’m new here. My OD light has been randomly flashing and hard shifts in 1st and 2nd. Shifts fine when the light is off. It’s very random but more prominent going up slight hills. If I turn the truck off and back on it’s like it never happened.
It’s been going on for a couple years just getting annoyed by it. I got FORScan as the Ford dealer I went to said they didn’t know to read the codes for it. (Seems odd to me.) I’m not sure if it makes a difference but I scanned it when the OD light was not flashing.
FORScan reads:
Code: P1728 - Transmission Slip Fault
Module: Powertrain Control Module
Diagnostic Trouble Code details
Transmission Slip Fault
internal mechanical/hydraulic failure
I was thinking ABS/VSS sensor on the pumpkin as my speedo jumps everytime the light comes on but I’m not sure what the fix is for that code. I replaced with a speed sensor and checked wiring at the plug with no change. I appreciate yalls help.
Peyton
1995 F-350 7.3 XLT CCLB E4OD
Lead Driver
Joined: Apr 2016
Posts: 7,188
Likes: 1,338
From: Bahstun
PSOM might have an issue if wiring all they way is intact
IF TC is slipping, you need to address that sooner than later as the disks will get glazed
another user is going through similar issue but not speed sensor issue
https://www.ford-trucks.com/forums/1...nsmission.html
IF TC is slipping, you need to address that sooner than later as the disks will get glazed
another user is going through similar issue but not speed sensor issue
https://www.ford-trucks.com/forums/1...nsmission.html
Thread
Thread Starter
Forum
Replies
Last Post
Zacto
1968-Present E-Series Van/Cutaway/Chassis
93
Nov 8, 2019 03:29 PM
967.3zf5
1987 - 1996 F150 & Larger F-Series Trucks
3
Aug 8, 2019 10:28 AM
