What does fault code bh164 and 51d018 on an o7 c7 cat in an freightliner?

Fault code BH164 on a Caterpillar C7 engine typically indicates a problem related to the engine's electronic control unit (ECU), often associated with communication issues or sensor malfunctions. The 51D018 code generally points to a malfunction in the fuel system, possibly indicating a problem with fuel pressure or flow. Both codes suggest that further diagnostics are necessary to identify the underlying issues and ensure proper engine performance. It's advisable to consult the vehicle's service manual or a professional technician for accurate troubleshooting.