Allison WTEC II Fault Code: 34 PID: SPN: 14 FMI: EEPROM, Power Off Block Checksum Posted by Diezel Solutions on March 23, 2025 Main code 34 indicates there is a problem with the calibration EEPROM, EEPROM, power off block checksum Share Share on Facebook Tweet Tweet on Twitter Pin it Pin on Pinterest 0 comments Leave a comment Name Email Message Please note, comments must be approved before they are published