2014 Dodge 3500 6.7L 4x4 P0087 Low Fuel Rail Pressure - Dealer Repairs Failed, Power Loss & Poor Mileage
I own a 2014 Dodge 3500 6.7L 4x4 diesel truck and am currently experiencing a persistent P0087 fault code indicating low fuel rail pressure. The issue has been taken to the dealership twice, but neither visit resolved the problem. Both fuel pumps have been replaced, filters have been changed, and multiple diagnostic procedures have been performed with no lasting improvement. As a car transporter, I use this truck as a 3-car hauler, and it now exhibits significant power loss when climbing hills, inconsistent engine performance (hiccups), and reduced fuel efficiency. Despite spending over $6,000 on repairs, the symptoms persist. The check engine light remains on, and the truck's overall reliability is severely compromised. I am seeking advice on what further diagnostic steps or potential solutions might be effective for this recurring P0087 issue in a 2014 Dodge 3500 6.7L diesel model.
I recommend testing the fuel pressure sensors using an oscilloscope to identify any signal glitches that could trigger the P0087 code. Additionally, use a manual fuel pressure gauge to verify if the fuel pump is actually delivering adequate pressure—this can help determine whether the issue lies with the sensor or the pump itself.