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OBD II Fault Code

  • OBD II P228B

OBD-II Code Fuel pressure control valve failure is defined as a Fuel Pressure Regulator 2 - Forced Engine Shutdown

The engine computer (PCM) monitors fuel pressure when the key is turned off. Under normal conditions, the fuel pressure should drop a specified amount within a given time frame. If the fuel pressure does not drop, code P228B will be stored.

Common Problems That Trigger the P228B Code

  • Fuel injection pump failure
  • Fuel pressure control valve failure
  • Fuel rail pressure sensor failure
  • Wiring issue
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