Turbine speed sensor, voltage interference
â–¶ How to fix
Check that there is no damage or short circuit on the external cable harness. Contact an Allison dealer.
What you'll see
No driver-visible symptom recorded.
System reaction
No system-reaction text recorded.
Diagnostic depth
Detection
The control unit has detected interference in the voltage from the turbine speed sensor
Possible cause
A possible cause of the fault may be damage to the cable harness or a defective turbine speed sensor.