monster1964 Posted March 26, 2013 Share Posted March 26, 2013 Help required, I have a 2007 Focus 1.8 tdci. The car started on Saturday morning then cut out. An Engine Systems Fault message came up on the dash board. I continued to try and start the car without any success. Britannia rescue said it could be the immobilser but they weren't sure (the guy had been working 12 straight hours dealing with cars caught in the snow on Friday and I think he was on his last legs) so the car was taken to my local garage for analysis. A number of fault codes are coming up but the one that remains when reset is P0091. Anyone any ideas what this fault means? Thanks. Quote Link to comment Share on other sites More sharing options...
wase16ll Posted March 26, 2013 Share Posted March 26, 2013 fuel pressure regulator 1: short to earth possible causes wiring short to earth, metering solenoid, pcm Quote Link to comment Share on other sites More sharing options...
btmaldon Posted March 26, 2013 Share Posted March 26, 2013 Fuel Pressure Regulator 1 Control Circuit Low. Could be caused by a number of issues. - Faulty fuel pressure regulator- Fuel pressure regulator harness is open or shorted- Fuel pressure regulator electrical circuit poor connection Could be some others such as the fuel filter Quote Link to comment Share on other sites More sharing options...
Stoney871 Posted March 26, 2013 Share Posted March 26, 2013 When was the car last serviced? A new fuel filter may be needed. Quote Link to comment Share on other sites More sharing options...
monster1964 Posted March 26, 2013 Author Share Posted March 26, 2013 Hi, Thanks for the responses so far. Will pass onto the mechanic. The car was serviced two weeks ago. The fuel filter was replaced. Just hoping the fault can be identified quickly and repaired without costing the earth. I am losing my street cred driving a nissan joke....oooppps juke courtesy car!!!! Quote Link to comment Share on other sites More sharing options...
Stoney871 Posted March 26, 2013 Share Posted March 26, 2013 Did the car run ok before the service? May I recommend that you check the fuel filter seal? If it's not bedded in right or they didn't replace it with the filter, that would cause air to leak into the fuel lines and cause a headache. Quote Link to comment Share on other sites More sharing options...
Jujuza Posted March 27, 2013 Share Posted March 27, 2013 Hi P0091 code: Fuel Pressure Regulator 1 Control Circuit Low . Quote Link to comment Share on other sites More sharing options...
monster1964 Posted March 29, 2013 Author Share Posted March 29, 2013 Again thanks for the advice. I was speaking with a friend of mine who had a similar problem after a service. It seems that the fuel filter wasn't a genuine part and when fitted the o-ring seal wasn't true and air was being sucked in. Same problem I am having since the garage mechanic stated that when he bled the fuel there was air in the fuel. So thats the next step. Quote Link to comment Share on other sites More sharing options...
monster1964 Posted April 2, 2013 Author Share Posted April 2, 2013 Situation now resloved. A genuine ford fuel filter fitted to the car. Now runs perfectly. The fuel filter that was fitted at service was not a genuine part. We found the fuel filter seal was a different shape and wasn't giving a 100% seal. A lesson here that getting non ford parts fitted doesn't always work out cheaper. Thanks to everyone who responded. Quote Link to comment Share on other sites More sharing options...
btmaldon Posted April 2, 2013 Share Posted April 2, 2013 Happy you got it sorted. :) Quote Link to comment Share on other sites More sharing options...
Stoney871 Posted April 2, 2013 Share Posted April 2, 2013 Job done and the Ford fuel filter strikes again. ;) Quote Link to comment Share on other sites More sharing options...
stef123 Posted April 2, 2013 Share Posted April 2, 2013 Another case of use a genuine filter confirmed. Nice work :) Quote Link to comment Share on other sites More sharing options...
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