Allison WTEC II Fault Code: 25 PID: SPN: 66 FMI: Output speed sensor, detected at 0 output rpm, 6th
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 failed
2. The required oncoming clutch or clutches did not come on.
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Volvo Premium Tech Tool PTT 2.8.130 Diagnostic Software 04.2022 ACPI ( 1 PC )
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Sale!
SERVICE MANUAL 3000 AND 4000 SERIES GEN 4 GENERATION – ALLISON
Allison Original price was: $19.00.$17.00Current price is: $17.00. -
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