The fuel pressure regulator is located on the fuel rail here is a diagram to show you where.
Here is a description of the code.
The PCM monitors the low speed fuel pump (LFP) primary circuit output from the PCM. The test fails if: the LFP circuit is commanded ON (grounded), and excessive current draw is detected on the LFP circuit; or, the LFP circuit is commanded OFF, and voltage is not detected on the LFP circuit. The PCM expects to detect VPWR voltage through the low speed fuel pump relay coil to the LFP circuit. Symptoms- Engine Light ON (or Service Engine Soon Warning Light)Possible Causes Open or shorted low fuel pump (LFP) circuit.
Open VPWR to the low speed fuel pump relay.
Damaged low speed fuel pump relay.
Possible Solution An open circuit or short to ground can only be detected with the low speed fuel pump.
A short to power can only be detected with the low speed fuel pump commanded ON.
During the KOEO and KOER self-test, the low speed fuel pump output command is cycled on and off.
Check out the diagrams (Below)
Please let us know if you need anything else to get the problem fixed.
Monday, July 4th, 2011 AT 5:27 AM