Intermittent code 559 |
05-30-2025, (Subject: Intermittent code 559 ) Post: #9 | |||
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RE: Intermittent code 559 We have this issue but it happens only at startup. We have a Cummins X15 Engine. We’ve already replaced High Pressure Fuel Pump, Relief Value & Pressure Sensor. We checked it this morning and it happens right at Startup. | |||
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