What does fuel rail system pressure too high mean?

What the P0088 code means. P0088 is a OBD2 trouble code that tells us there is high fuel pressure found in the fuel system. This high fuel pressure is detected by the fuel pressure sensor located on the fuel rail. P0088 then causes the vehicle to go into a failsafe mode until normal fuel pressure is detected.

What should the fuel rail pressure be on a 5.9 Cummins?

5,600 – 6,500 PSI
The rail pressure during normal idle should be 5,600 – 6,500 PSI (386 – 448 bar).

What should the rail pressure be on a Dodge 5.9L?

1. A minimum rail pressure of 5,000 PSI (345 bar) is required to start the engine. 2. The rail pressure during normal idle should be 5,600 – 6,500 PSI (386 – 448 bar).

What should fuel rail pressure be when idle?

The rail pressure during normal idle should be 5,600 – 6,500 PSI (386 – 448 bar). 3. If checking a drivability issue the desired fuel rail pressure set point and actual fuel rail pressure should be checked to see if they remain close to each other. 1.

What makes a common rail 5.9 diesel engine go out?

If the fuel filters are not regularly changed, there can be a small amount of dirt and moisture that winds up in the injectors, and as a result, early common-rail 5.9’s have a bad rap for faulty fuel injectors, going out somewhere around the 150,000 mile mark.

Is the fuel pressure relief valve on a Cummins 5.9?

It’s a pretty common failure, and luckily a new FCA is very easy to install on a Cummins, and it’s also affordable at a hundred and thirty bucks. One other part on a common-rail 5.9 that’s known to fail would be the Fuel Pressure Relief valve.

1. A minimum rail pressure of 5,000 PSI (345 bar) is required to start the engine. 2. The rail pressure during normal idle should be 5,600 – 6,500 PSI (386 – 448 bar).