Main code 69 indicates the ECU has malfunctioned. ECU, open driver, A solenoid circuit To assist in tracking ECU reliability, the subcode has been included to indicate the cause of the ECU malfunction. Most codes, except Code 69 34, can be cleared; but they will probably recur. Replacing the ECU corrects the problem. Allison WTEC II Fault Code: 66 PID: SPN: 00 FMI: Serial communications interface fault Allison WTEC II Fault Code: 65 PID: SPN: 00 FMI: Engine rating too high Allison WTEC II Fault Code: 64 PID: SPN: 23 FMI: Retarder modulation request sensor, failed high Allison WTEC II...

Main code 69 indicates the ECU has malfunctioned. ECU, open driver, B solenoid circuit To assist in tracking ECU reliability, the subcode has been included to indicate the cause of the ECU malfunction. Most codes, except Code 69 34, can be cleared; but they will probably recur. Replacing the ECU corrects the problem. Allison WTEC II Fault Code: 69 PID: SPN: 12 FMI: ECU, A solenoid driver open Allison WTEC II Fault Code: 66 PID: SPN: 00 FMI: Serial communications interface fault Allison WTEC II Fault Code: 65 PID: SPN: 00 FMI: Engine rating too high Allison WTEC II Fault...

Main code 69 indicates the ECU has malfunctioned. ECU, open driver, C solenoid circuit To assist in tracking ECU reliability, the subcode has been included to indicate the cause of the ECU malfunction. Most codes, except Code 69 34, can be cleared; but they will probably recur. Replacing the ECU corrects the problem. Allison WTEC II Fault Code: 69 PID: SPN: 13 FMI: ECU, B solenoid driver open Allison WTEC II Fault Code: 69 PID: SPN: 12 FMI: ECU, A solenoid driver open Allison WTEC II Fault Code: 66 PID: SPN: 00 FMI: Serial communications interface fault Allison WTEC II...

Main code 69 indicates the ECU has malfunctioned. ECU, open driver, C solenoid circuit To assist in tracking ECU reliability, the subcode has been included to indicate the cause of the ECU malfunction. Most codes, except Code 69 34, can be cleared; but they will probably recur. Replacing the ECU corrects the problem. Allison WTEC II Fault Code: 69 PID: SPN: 14 FMI: ECU, C 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: 12 FMI: ECU, A solenoid driver open Allison WTEC...

Main code 69 indicates the ECU has malfunctioned. ECU, open driver, C solenoid circuit To assist in tracking ECU reliability, the subcode has been included to indicate the cause of the ECU malfunction. Most codes, except Code 69 34, can be cleared; but they will probably recur. Replacing the ECU corrects the problem. Allison WTEC II Fault Code: 69 PID: SPN: 15 FMI: ECU, D 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: 13 FMI: ECU, B solenoid driver open Allison WTEC...