Battery constant drain with tcm code
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Battery constant drain with tcm code
2011 f350 6.7L
Both batteries are new and alternators are putting out 14+volts when running.
After 24 hours with the truck not running or being charged, the batteries are dead and it will not crank. When this happens the batteries usually have a total of 5 volts in both.
I charge up the batteries and it starts fine and runs normal until I don't run it for more than 24 hours.
There is a code and engine light that I pulled.
Code: P0884 generic. TCM power signal intermittent.
It seems like there is a constant power drain on the batteries and that's why they keep going dead.
Not sure where to start looking for open grounds/ loose wires
Any suggestions?
Both batteries are new and alternators are putting out 14+volts when running.
After 24 hours with the truck not running or being charged, the batteries are dead and it will not crank. When this happens the batteries usually have a total of 5 volts in both.
I charge up the batteries and it starts fine and runs normal until I don't run it for more than 24 hours.
There is a code and engine light that I pulled.
Code: P0884 generic. TCM power signal intermittent.
It seems like there is a constant power drain on the batteries and that's why they keep going dead.
Not sure where to start looking for open grounds/ loose wires
Any suggestions?
New User
Joined: Mar 2021
Posts: 1
Likes: 0
2011 f350 6.7L
Both batteries are new and alternators are putting out 14+volts when running.
After 24 hours with the truck not running or being charged, the batteries are dead and it will not crank. When this happens the batteries usually have a total of 5 volts in both.
I charge up the batteries and it starts fine and runs normal until I don't run it for more than 24 hours.
There is a code and engine light that I pulled.
Code: P0884 generic. TCM power signal intermittent.
It seems like there is a constant power drain on the batteries and that's why they keep going dead.
Not sure where to start looking for open grounds/ loose wires
Any suggestions?
Both batteries are new and alternators are putting out 14+volts when running.
After 24 hours with the truck not running or being charged, the batteries are dead and it will not crank. When this happens the batteries usually have a total of 5 volts in both.
I charge up the batteries and it starts fine and runs normal until I don't run it for more than 24 hours.
There is a code and engine light that I pulled.
Code: P0884 generic. TCM power signal intermittent.
It seems like there is a constant power drain on the batteries and that's why they keep going dead.
Not sure where to start looking for open grounds/ loose wires
Any suggestions?
Cargo Master
Joined: Feb 2015
Posts: 2,338
Likes: 255
From: Livermore Ca.
I believe there is a wire loom that runs beside the motor on the passenger side. It has been known that those wires sometimes have problems. Another thing you can do is hook up a volt meter to the battery and start pulling fuses. just unhook one battery and see which circuit has a draw.
New User
Joined: Jul 2021
Posts: 1
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Tcm p0884
I believe there is a wire loom that runs beside the motor on the passenger side. It has been known that those wires sometimes have problems. Another thing you can do is hook up a volt meter to the battery and start pulling fuses. just unhook one battery and see which circuit has a draw.
2nd Gear
Joined: Aug 2009
Posts: 2
Likes: 0
From: Kansas
Battery constant drain
I have the same issue sometimes its 24hrs or overnight if not daily driven. Two shops (dealer & independent) have done the amp draw test and pulled every fuse, alternator and battery checks are good but nothing is found. Sometimes it will throw the low battery code or no code. I believe some component has a parasitic draw on the batteries and takes them down to 5 volts when its not driven daily. Maybe a IR Thermal imaging camera could see the heat signature from the amp draw?
2015 F250 6.7 Alternator checks good 14volts, New batteries November 2020.
Open to any suggestions
Following
2015 F250 6.7 Alternator checks good 14volts, New batteries November 2020.
Open to any suggestions
Following
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