The mechanic plugged the computer and got these faults:

  • Exhaust gas recirculation control circuit (circuit hight)
  • Exhaust gas recirculation value frozen.
  • Fuel pressure control value.
  • Injector control pressure sensor circuit (too low).
  • Exhaust gas recirculation control circuit low.
  • EGR valve sensor circuit. valve stuck open.
  • Exhaust gas recirculation control circuit low.

I feel there is a problem with EGR value that causes that causes fuel pressure problem is that right?

  • In cold weather, the car starts so hard.
  • The EGR has been replaced 3 times in this year.

Any idea?

  • The egr valve does not control fuel pressure. The fuel pressure is controlled by the pressure sensor and the ecu. The egr controls the amount of exhaust gas re-entering the engine that is also controlled by the ecu. So, there could be multiple separate problems.
    – Solar Mike
    Nov 12 '18 at 19:02
  • Which engine do you have?
    – Mark
    Nov 13 '18 at 14:34
  • Ford Focus 1.6 diesel Nov 14 '18 at 8:05
  • Try blanking the EGR to rule it out. There are special metal plates for this, I guess you can buy them from Ebay.
    – Mark
    Nov 15 '18 at 7:29
  • 1
    Start from EGR connector, check if plug and socket are in good condition, no dirt or oxidation. Then follow with the cables, check if they are not broken, insulation intact, no signs of animal bites etc.
    – Mark
    Nov 16 '18 at 13:46

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