Allison WTEC II Fault Code: 69 PID: SPN: 35 FMI: ECU, EEPROM checksum test

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: 34 FMI: ECU, EEPROM write timeout

Allison WTEC II Fault Code: 69 PID: SPN: 33 FMI: ECU, Computer Operating Properly (COP) timeout

Allison WTEC II Fault Code: 69 PID: SPN: 32 FMI: ECU, SPI communications link fault

Allison WTEC II Fault Code: 69 PID: SPN: 26 FMI: ECU, N solenoid driver open

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Allison WTEC II Fault Code: 69 PID: SPN: 34 FMI: ECU, EEPROM write timeout
Allison WTEC II Fault Code: 69 PID: SPN: 36 FMI: ECU, RAM self test