P0087 and P01C6 codes

[Deen]

Just got these codes along with some stumbling and stall at idle.
Time for oil filter and oil change along with fuel filter change. Inspected fuel filter, no contamination found and fuel in filter was clean.
Drove it some 20 miles at freeway speeds (50-75 mph). No stumbles or stall but P01C6 came back with an 18,xxx pressure reading. HPFP recall was done about 20,000 miles ago, now at 41,000.
Bad sensor, fuel pump going out?

Sponsored

 

[Deen]

Anybody with some answers?

 

[grimmjeeper]

Did you look up those codes? What do they mean?

 

[Deen]

Yes I looked them up. Both are related to low fuel pressure in the fuel rail. When you have low fuel pressure the first suspect is the fuel filter which is why I went ahead with the service at 5% remaining and questiond the HPFP going out.

 

[grimmjeeper]

Could be the replacement fuel pump going out. I'm not sure if there's a pressure regulator on the fuel rail. If so, it could be going out.

Sponsored