DTC P0627: Fuel Pump Control (FPC) System Malfunction (V6)
General Description
The fuel pump control module monitors the voltage applied to the fuel pump in response to the duty signal from the powertrain control module (PCM). When the voltage applied to the fuel pump is normal, the fuel pump control module outputs a high diagnosis signal, and when the voltage applied is abnormal, it outputs a low signal. The PCM monitors this diagnostic signal whenever the engine is running. When the diagnostic signal from the fuel pump control module is low for a set time, the PCM detects a malfunction and stores a DTC.
Monitor Execution, Sequence, Duration, DTC Type, OBD Status
| Execution | Continuous |
| Sequence | None |
| Duration | 2 seconds or more |
| DTC Type | One drive cycle, MIL off |
| OBD Status | PASSED/FAILED/NOT COMPLETED (STILL TESTING) |
Enable Conditions
| Condition | |
|---|---|
| State of the engine | Running |
Malfunction Threshold
The diagnostic signal is low for at least 2 seconds.
Possible Cause
NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
- PGM-FI main relay 2 failure
- Fuel pump control module failure
- Fuel pump control module FPCD line open
- Fuel pump control module power supply line open
Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected, a Pending DTC, a Confirmed DTC, and the freeze data are stored in the PCM memory. The MIL does not come on.
Conditions for clearing the DTC
The Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command or by disconnecting the 12 volt battery.