Gear changing solenoid SS2, open circuit
â–¶ How to fix
Check the cable harness between gearbox and control unit, particularly the cables to pins 31 and 19 on the control unit. If no fault is found, 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 open circuit on the SS2-solenoid return circuit.
Possible cause
A possible cause of this fault code is a damaged cable harness in the solenoid return circuit.