Fuel Rail Pressure A Reading at 1440.22 psi at Idle

[newnewnew]

I have a 2021 CX5 that has been to the dealership multiple times for engine issues, started with a oil seepage then to a leak.

I just got the car back from the dealership a couple weeks ago after they replaced the head gasket due to the oil leak. After I got the car back, I noticed some noise from the engine that I am not sure if it was there before. So I asked a friend who has a OBDII scanner to scan for error codes.

Everything seems fine except for Fuel Rail Pressure A, it was reading at 1440.22 psi at idle. Is this normal? The scanner show it's abnormal. I did some Googling after, some source said it's normal, some said it's not.

If someone has any experience or knowledge about this, please share it with me.

I already scheduled another visit with the dealership about this but I have a road trip planned before the visit. Just want to make sure it will not cause any serious issue during the road trip.

Thank you.

 

[Jmaz]

I have a 2021 CX5 that has been to the dealership multiple times for engine issues, started with a oil seepage then to a leak.

I just got the car back from the dealership a couple weeks ago after they replaced the head gasket due to the oil leak. After I got the car back, I noticed some noise from the engine that I am not sure if it was there before. So I asked a friend who has a OBDII scanner to scan for error codes.

Everything seems fine except for Fuel Rail Pressure A, it was reading at 1440.22 psi at idle. Is this normal? The scanner show it's abnormal. I did some Googling after, some source said it's normal, some said it's not.

If someone has any experience or knowledge about this, please share it with me.

I already scheduled another visit with the dealership about this but I have a road trip planned before the visit. Just want to make sure it will not cause any serious issue during the road trip.

Thank you.

Without checking, I'd think that wouldn't be too high if the fuel has to be forced through tiny injector orifices with enough pressure for it to be atomized against cylinder compression pressure.
I know my 2014's fuel pressure can reach ~2900 PSI (which I believe is the max spec) at high rpm while parked.
EDIT --- I see you said FOURTEEN hundred not Four hundred. Yes, that does seem high. I'd think maybe 500-600 wouldn't be out of line though.
2nd EDIT---- Couldn't overcome being curious so I dug out my scanner and checked. Engine coolant 136*F , fuel pressure at idle varied between 424 and 449 PSI. I still don't know the normal range but it is what it is. No codes, CEL etc.