There are no performance issues, the engine always runs like a bird! However, if I drive it for some time until the engine is fully warm and then stop for a few minutes, when I restart the engine the check engine light comes on after a few seconds/minutes and the OBD reader reports code P0191.
If I reset it and continue my journey, the light does not come on again until I repeat the stop/start procedure. I've changed the fuel filter, fuel rail pressure sensor and the fuel cap but there is no difference.
Please help!!
P0191 Fuel rail pressure (FRP) sensor circuit perfromance
This code represenst the condition or the perfromance of the fuel pump, the fuel pressure will need to be tested the specification are engine running 28- 45 psi
Here is a FRP this coded a P0191, this mean this FRP is still good, the solution for this is first make sure its vacuum line is connected and recieves vacuum. and check the fuel pressure.
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