Overview:The Transmission Controller detected that the Shift Finger position indicates neutral and a comparison of Input and Main Shaft speeds indicate the transmission is in gear. The comparison of shaft speeds is only performed when the vehicle is moving and a shift is in process. This fault can only be set during a shift, and becomes inactive after powerdown. Detection:The fault is detected after the Transmission Controller powers up and a non-neutral condition is detected during a shift. Fallback:This fault causes an in-place fallback. The transmission will remain in current gear. Possible Causes:1) Worn internal transmission components Eaton Gen 2...

Overview:Fault Code 83 indicates the Shift Lever is not sensing any lever positions. Detection:Starting at key on and throughout operation, the Shift Controller constantly measures the feedback from the Shift Lever circuit. If the Shift Lever reports no lever positions are sensed, the fault code is set. Fallback:This fault causes a down shift only fallback and shifts to neutral when the vehicle stops. Possible Causes:1) Shift lever 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...

Overview:Fault Code 91 indicates an excessive resistance has been detected between the power supply source (battery or starter) and the Transmission Controller. Detection:The fault is detected during power down. Possible Causes:1) Vehicle Harness between battery or starter and Transmission Controller. Shop Talk:Key off. If the fault is present, the system will automatically detect the problem during system calibration and set the code Inactive. Possibletriggers include corrosion on main battery power and ground. Eaton Gen 2 (AutoShift) Fault Code: 83 PID: SID 18 FMI: 14 Shift Lever Missing Eaton Gen 2 (AutoShift) Fault Code: 81 PID: SID 47 FMI: 7 Gear...

Overview:Fault Code 92 indicates the vehicle is supplying weak battery voltage to the transmission. Detection:The fault is detected when vehicle battery voltage is below 9 volts for a period of at least 10 seconds. Fallback:If this fault occurs while moving, it causes an in-place fallback. Once the vehicle is stopped, the starting gear and reverse can be engaged. Possible Causes:1) This fault code can be caused by the vehicle charging system or battery integrity Eaton Gen 2 (AutoShift) Fault Code: 91 PID: SID 236 FMI: 5 Power Connection Eaton Gen 2 (AutoShift) Fault Code: 83 PID: SID 18 FMI: 14...

Overview:Fault Code 93 indicates the Transmission Controller is not receiving J1939 messages from the engine. Detection:The fault is detected if J1939 communication from the engine is lost for 5 seconds. Fallback:If the fault occurs while moving, it causes a 1-speed fallback. Once vehicle has stopped, the starting gear and reverse can be engaged. If the failure occurs at system initialization, it causes an AutoSelect fallback mode. Possible Causes:1) OEM supplied J1939 harness2) Engine ECM 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...