One Reply to “3100 HEUI Troubleshooting Injection Actuation Pressure Sensor Test”

  1. I have a CAT 3126B in a year 2000 motorhome. When the fuel tank falls to 3/4 or less an engine code comes on and derate begins. The engine light is intermittent and I can limp to a fuel depot and fill up and the issue goes away. All gauges are fine and I have no way of getting the engine ECM code the connector is 6 PIN with four wires connected to it. Any suggestions as to where to look for the problem? The engine starts and runs fine when the engine light is off.

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