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James, Ford Technician
Category: Ford
Satisfied Customers: 3630
Experience:  Ford Senior Master Tech, Ford gas and diesel expert, ASE Certified
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P1000 obd systems readiness test not complete P120f fuel

Customer Question

P1000 obd systems readiness test not complete
P120f fuel pressure regulator excessive variation
P2289 injector control pressure too high
Submitted: 1 year ago.
Category: Ford
Expert:  James replied 1 year ago.

Hello, is the vehicle running at all?

Customer: replied 1 year ago.
revs up when I put it in park then runs rough. I cleared codes and it seems to be running fine now. any thoughts on how i get the problem to duplicate so i can trouble shoot?
Expert:  James replied 1 year ago.

Based off of the codes you have I would suspect a faulty fuel rail pressure sensor. The FRP sensor is a common failure point and can make the engine run rough. To duplicate you can monitor the FRP voltage. With the key on engine off it should read .49v. When it runs rough monitor FRP it will likely be a very erdratic reading.

Customer: replied 1 year ago.
Where is the FRP located?
Expert:  James replied 1 year ago.

The FRP is located under the passenger side valve cover.