24 March, 2025 Allison WTEC II Fault Code: 21 PID: SPN: 23 FMI: Throttle position sensor, failed high Main code 21 indicates the throttle position sensor has been retracted or extended by its linkage into an error zone....
24 March, 2025 Allison WTEC II Fault Code: 22 PID: SPN: 14 FMI: Engine speed sensor reasonableness test Main code 22 indicates a fault within a speed sensor, the wiring to a speed sensor, incorrect speed sensor gap,...
24 March, 2025 Allison WTEC II Fault Code: 22 PID: SPN: 15 FMI: Turbine speed sensor reasonableness test Main code 22 indicates a fault within a speed sensor, the wiring to a speed sensor, incorrect speed sensor gap,...
24 March, 2025 Allison WTEC II Fault Code: 22 PID: SPN: 16 FMI: Output speed sensor reasonableness test Main code 22 indicates a fault within a speed sensor, the wiring to a speed sensor, incorrect speed sensor gap,...
24 March, 2025 Allison WTEC II Fault Code: 23 PID: SPN: 12 FMI: Primary Shift Selector or RSI Link Fault Main code 23 indicates a fault with a shift selector or the wiring between a shift selector and the ECU....
24 March, 2025 Allison WTEC II Fault Code: 23 PID: SPN: 13 FMI: Primary Shift Selector Mode Function Fault Main code 23 indicates a fault with a shift selector or the wiring between a shift selector and the ECU....