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Allison WTEC II Fault Code: 35 PID: SPN: 16 FMI: Real Time EEPROM Write Interruption

Main code 35 indicates the ECU has detected a complete power loss before the ignition was turned off. When this happens, the ECU is not able to save the current operating parameters in memory before turning itself off.

Real-time EEPROM write interruption. (Power interruption at the same time the ECU is recording a critical code to the real-time section of the EEPROM.)