CAT 3406E (Prefix 1MM or 2WS) Fault Code: 59 PID: SPN: 252 FMI: 11 Engine Software Incorrect

The Engine Control Module (ECM) detects incorrect engine software .

Probable Causes:

1) New ECM on vehicle, needs to be programmed
2) Current ECM programmed incorrectly
3) ECM Connection/harness

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