Allison WTEC II Fault Code: 63 PID: SPN: 41 FMI: Pump/pack and a neutral general purpose input
Allison WTEC II Fault Code: 64 PID: SPN: 12 FMI: Retarder modulation request sensor, failed low
Allison WTEC II Fault Code: 64 PID: SPN: 23 FMI: Retarder modulation request sensor, failed high
Allison WTEC II Fault Code: 65 PID: SPN: 00 FMI: Engine rating too high
Allison WTEC II Fault Code: 66 PID: SPN: 00 FMI: Serial communications interface fault
Allison WTEC II Fault Code: 69 PID: SPN: 12 FMI: ECU, A solenoid driver open
Allison WTEC II Fault Code: 69 PID: SPN: 13 FMI: ECU, B solenoid driver open
Allison WTEC II Fault Code: 69 PID: SPN: 14 FMI: ECU, C solenoid driver open
Allison WTEC II Fault Code: 69 PID: SPN: 15 FMI: ECU, D solenoid driver open
Allison WTEC II Fault Code: 69 PID: SPN: 16 FMI: ECU, E solenoid driver open