Eaton Gen 2 (AutoShift) Fault Code: 65 PID: SID 251 FMI: 4 Logic Power

Overview:
Fault Code 65 indicates the Transmission Controller has detected low transmission logic power to the Transmission Controller on vehicle interface 18-way connector Pin B1 and Pin E2.

Detection:
Starting at key on and throughout operation, the Transmission
Controller constantly measures the motor voltage. If the reading is low, the fault code is set.

Fallback:
This fault causes an in-place fallback.

Possible Causes:
1) Battery Bus Fuse / Circuit Breaker is Open
2) Low batteries
3) Corroded or loose contacts
4) Transmission Controller
5) Shift Controller

Shop Talk:
Key on. If the fault is present, the system should automatically detect the problem and set the code. If the fault is not present at key on, operate the vehicle and attempt to duplicate the driving conditions that triggered the fault code. Possible triggers include heat, vibration.