DTC : P064A: General Description
The fuel pressure is adjusted by high pressure fuel pump output ON/OFF which is controlled by the powertrain control module (PCM). The injector control module drives the high pressure fuel pump by receiving drive command output from the PCM. The injector control module monitors high pressure fuel pump currents, and transmits results to the PCM by return signal. If the return signal according to the PCM drive command is abnormal for a specified time, a malfunction is detected and a DTC is stored.