After repairs, the code may need to be cleared. Sometimes, shutting off the engine and letting the ECU fully shut down (often by using the master battery switch) can temporarily clear the code. Summary Table: 3297 Troubleshooting Possible Cause Replace both filters immediately. Slime/Algae in Tank Clean tank, lines, and sediment bowl. Faulty Regulator (MPROP) Test/Replace high-pressure pump regulator. Bad Pressure Sensor Test rail pressure sensor signal.
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The typically indicates a high positive fuel pressure deviation in the common rail system . This means the actual fuel pressure is significantly higher than what the Engine Control Unit (ECU) has requested, often occurring alongside high fuel flow rate setpoints . After repairs, the code may need to be cleared
Drain accumulated water to prevent corrosion in the precision pump components. Daily inspection / Before operation. Slime/Algae in Tank Clean tank, lines, and sediment bowl