Check engine light code.

That is Cummins fault 2311. Info from Cummins below. Engine harness pins # 30 and #40 are the wires you need the check.

Electronic Fuel Injection Control Valve Circuit - Condition Exists. The fuel pump actuator circuit resistance is too high or too low, or an intermittent connection has been detected.

This fault code can become active for any of the following reasons:

• Fuel pump actuator high resistance
• Engine harness high resistance
• Loose, worn, or corroded connectors or pins at the fuel pump actuator or ECM connectors
• Fuel pump actuator with low internal resistance
• Fuel pump actuator or engine harness that has shorted to ground
• Intermittent circuit malfunctions that cause the fuel pressure to exceed the fuel rail pressure relief valve opening pressure.

 

could be.