Allison WTEC II Fault Code: 54 PID: SPN: 42 FMI: Oncoming ratio test (during shift), 4 to 2
Allison WTEC II Fault Code: 54 PID: SPN: 43 FMI: Oncoming ratio test (after shift), 4 to 3
Allison WTEC II Fault Code: 54 PID: SPN: 45 FMI: Oncoming ratio test (after shift), 4 to 5
Allison WTEC II Fault Code: 54 PID: SPN: 46 FMI: Oncoming ratio test (during shift), 4 to 6
Allison WTEC II Fault Code: 54 PID: SPN: 53 FMI: Oncoming ratio test (during shift), 5 to 3
Allison WTEC II Fault Code: 54 PID: SPN: 54 FMI: Oncoming ratio test (after shift), 5 to 4
Allison WTEC II Fault Code: 54 PID: SPN: 56 FMI: Oncoming ratio test (after shift), 5 to 6
Allison WTEC II Fault Code: 54 PID: SPN: 65 FMI: Oncoming ratio test (after shift), 6 to 5
Allison WTEC II Fault Code: 54 PID: SPN: 64 FMI: Oncoming ratio test (after shift), 6 to 4
Allison WTEC II Fault Code: 54 PID: SPN: 70 FMI: Oncoming ratio test (after shift), R to L