DETECTION CONDITION

•  The PCM monitors the fuel pressure in the common rail from the fuel pressure sensor while the engine is running. If the fuel pressure is less than the threshold, the PCM determines that the fuel pressure is too low.

POSSIBLE CAUSE

•  Fuel metering valve malfunction (built-in fuel pump)

•  Fuel pump malfunction

•  Fuel pressure sensor malfunction

•  Fuel injector malfunction

•  Fuel injector improper connection

•  Leakage or clogging in fuel line

•  Restriction or damage in fuel filter

•  PCM malfunction