Allison WTEC II Fault Code: 69 PID: SPN: 23 FMI: ECU, H solenoid driver open

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.

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