Main code 41 indicates the ECU has detected either an open circuit or a short-to-ground in a solenoid or the solenoid wiring. The DO NOT SHIFT response is activated when this code is detected and all solenoids are turned off. Subcode will not trigger the DO NOT SHIFT light.
Allison WTEC II Fault Code: 41 PID: SPN: 24 FMI: Open or short-to-ground, J solenoid circuit
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