Detroit DD15 EPA07 (2007-09) Fault Code: SPN 973 FMI 13 (CPC) Engine Retarder Selection Signal is Missing
NOTE: Please see the step by step troubleshooting procedures for this specific code.
NOTE: If codes 168-0, 168-14, or 168-18 active fix those first.
NOTE: If ECM has been programmed recently, check programming to ensure it is correct.
NOTE: This code is coming from another computer on the vehicle (ABS, Transmission, etc…).
![JOHN DEERE PARTS ADVISOR & HITACHI 2.24.2 [2023.07] - ECUFORCETRUCK EPC](https://i0.wp.com/www.ecuforcetruck.com/wp-content/uploads/2023/09/1.png?resize=300%2C300&ssl=1)
![JOHN DEERE PARTS ADVISOR & HITACHI 2.24.2 [2023.07] - ECUFORCETRUCK EPC](https://www.ecuforcetruck.com/wp-content/uploads/2023/09/2.png)
![Volvo Penta EPC 6 Offline VMware [12.2021] VMware](https://i0.wp.com/www.ecuforcetruck.com/wp-content/uploads/2022/11/VOLVO-PENTA-2021-A.jpg?resize=300%2C300&ssl=1)
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