Allison

Main code 25 occurs if the output speed sensor reports a zero speed reading while both engine and turbine speeds are approximately equal, turbine speed is above a calibration value, and neutral is not selected or commanded. Possible Causes:1. Output speed sensor has failed2. The required oncoming clutch or clutches did not come on.

Main code 25 occurs if the output speed sensor reports a zero speed reading while both engine and turbine speeds are approximately equal, turbine speed is above a calibration value, and neutral is not selected or commanded. Possible Causes:1. Output speed sensor has failed2. The required oncoming clutch or clutches did not come on.

Main code 25 occurs if the output speed sensor reports a zero speed reading while both engine and turbine speeds are approximately equal, turbine speed is above a calibration value, and neutral is not selected or commanded. Possible Causes:1. Output speed sensor has failed2. The required oncoming clutch or clutches did not come on.

Main code 25 occurs if the output speed sensor reports a zero speed reading while both engine and turbine speeds are approximately equal, turbine speed is above a calibration value, and neutral is not selected or commanded. Possible Causes:1. Output speed sensor has failed2. The required oncoming cluth or cluthes did not come on.

Main code 32 indicates the transmission gear ratio is correct, but the C3 pressure switch is open when it should be closed.