Eaton Gen 1 (AutoShift) Fault Code: 12 PID: SID 233 FMI: 12 Transmission ECU
Overview:
The code indicates an internal failure of the Transmission ECU.
Detection:
The Transmission ECU checks the program memory every time the key is turned on. If the transmission is able to detect a failure within its own memory, it sets this fault code.
Fallback:
This fault causes an In Place fallback while moving and a failure during system initialization.
Required Tools:
1) Basic Hand Tools
2) AutoSelect/AutoShift Troubleshooting Guide
Possible Causes:
1) Improper configuration software
2) Faulty Transmission ECU
![Magic Tuner [paccar, Maxxforce, Detroit, Caterpillar, Delete]](https://www.ecuforcetruck.com/wp-content/uploads/2021/10/1-300x300.png)
Related products
-
Allison 1000 & 2000 Gen 4 Fault Codes: P0873 Transmission Pressure Switch Solenoid E Circuit High
1000 & 2000 Gen 4 $50.00 -
Allison 1000 & 2000 Gen 4 Fault Codes: U0031 J1850 (Class 2) Serial Data Communication Link Low
1000 & 2000 Gen 4 $50.00 -
-
Allison 1000 & 2000 Gen 4 Fault Codes: P0848 Transmission Pressure Switch Solenoid D Circuit High
1000 & 2000 Gen 4 $50.00 -
-
Allison 1000 & 2000 Gen 4 Fault Codes: P0870 Transmission Pressure Switch Solenoid E Circuit
1000 & 2000 Gen 4 $50.00 -
Allison 1000 & 2000 Gen 4 Fault Codes: U1064 J1850 (Class 2) TBC Controller State of Health Failure
1000 & 2000 Gen 4 $50.00 -
Allison 1000 & 2000 Gen 4 Fault Codes: U1000 Class 2 Loss of Serial Data Communication
1000 & 2000 Gen 4 $50.00 -
-
Allison 1000 & 2000 Gen 4 Fault Codes: P0123 Pedal Position Sensor Circuit High Voltage
1000 & 2000 Gen 4 $50.00 -
-
Allison 1000 & 2000 Gen 4 Fault Codes: U1096 J1850 (Class 2) IPC Controller State of Health Failure
1000 & 2000 Gen 4 $50.00 -
Allison 1000 & 2000 Gen 4 Fault Codes: P2771 Four-Wheel Drive Switch Circuit
1000 & 2000 Gen 4 $50.00 -
-
