CAT 3406E (Prefix 1MM or 2WS) Fault Code: 42 PID: SPN: 22 FMI: 13 Engine Speed Signal Calibration Not Performed
The Engine Control Module (ECM) detects the following conditions:
•A timing calibration has never been performed on a new ECM or the timing is off by more than three degrees.
Probable Causes:
1) Speed/timing sensor not calibrated properly (Need CAT software to do this)
2) Speed/timing sensor failure
3) Speed/timing sensor harness failure
![download Hitachi Construction Machinery MPDr Ver 3.7.0.0 [10.2020] Diagnostic Software](https://i0.wp.com/www.ecuforcetruck.com/wp-content/uploads/2023/05/MPDR-3.7.00.png?resize=300%2C300&ssl=1)
![download Hitachi Construction Machinery MPDr Ver 3.7.0.0 [10.2020] Diagnostic Software](https://www.ecuforcetruck.com/wp-content/uploads/2023/05/MPDR.png)
