Ford Forums

If you’re dealing with the P0087 code on your Ford, it means the fuel rail pressure is too low, and that can cause all kinds of performance problems. Most commonly, this code shows up on diesel engines, but it can happen with gasoline models too. Here’s a breakdown of what’s likely causing the issue and how to troubleshoot it.

Common Causes:

1. Clogged Fuel Filter: Over time, the fuel filter can become clogged with debris, restricting fuel flow to the engine.
   
2. Faulty Fuel Pump: If the fuel pump isn’t delivering enough pressure, the engine won’t get the fuel it needs to perform properly.
   
3. Fuel Pressure Sensor Issue: Sometimes, the sensor itself is faulty, causing incorrect readings.
   

Steps to Fix:

1. Check and Replace the Fuel Filter: This is the most straightforward fix and something you can do at home. Locate the fuel filter (refer to your service manual for the exact location), remove it, and inspect it. If it’s dirty or clogged, replace it.
   
2. Test the Fuel Pump: Use a fuel pressure gauge to test if your fuel pump is providing adequate pressure. If not, you’ll likely need to replace it. Be prepared—fuel pumps can be expensive, especially on diesel models.
   
3. Inspect the Fuel Pressure Sensor: If the filter and pump are fine, your next step is to check the sensor. A faulty sensor can send incorrect data to the ECU, causing the P0087 code. Replacing the sensor is relatively easy and cheaper than replacing a pump.
   

If you’re not sure where to start, I’d recommend doing the fuel filter first—it’s a common issue and often gets overlooked. Plus, it’s a cheap fix compared to fuel pump replacement.