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Focus Mark 2: Fuel Pressure As Reported By Sensor

RichHorrocks
RichHorrocks
in Ford Focus Club

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I'm looking into the following error code on my 1.8 TDCi:

P0191-61 - FRP Sensor Range/Performance

The code appeared after I changed the glow plugs, which I did as a response to an earlier error (which is now cleared):

P0380-68 - Glowplug control circuit

I've taken a reading of the Fuel Rail Pressure using FORScan with the car running. I'm getting readings of about 5000 psi (340 bar). I don't have my Haynes manual with me, and Google isn't helping much. What are the expected ranges for pressure at the rail? (These values seem a bit high to me, but then this is the first time I've had to play around with fuel lines.)

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