What is the code P0627 on a 2013 Ford F150?
The code P0627 on a 2013 Ford F-150 points to an issue with the fuel pump control module (FPCM) circuit or its signaling. In practical terms, it signals a fault in how the fuel pump is being controlled or powered, rather than a simple sensor fault.
For owners, this can manifest as starting problems, stalling, or irregular engine performance. Because the fuel delivery system is critical to engine operation, diagnosing P0627 involves checking electrical connections, the fuel pump and its control module, and related fuses and relays. While some cases are simple and repairable at home, others require professional diagnosis and service.
What P0627 Means for the 2013 Ford F-150
P0627 is a diagnostic trouble code indicating a problem with the fuel pump control module circuit or with the module itself. The Ford Powertrain Control Module (PCM) monitors inputs and controls the fuel pump via the Fuel Pump Control Module (FPCM). When it detects an abnormal signal, it stores P0627 and may illuminate the check engine light. This code does not point to a single failed part by itself; it flags an electrical or control-system fault that affects fuel delivery.
The role of the Fuel Pump Control Module
The FPCM manages the electrical power sent to the fuel pump, coordinating fuel pressure with engine demand. It communicates with the PCM to adjust pump operation. A fault in this control path can prevent the fuel pump from delivering the correct pressure, causing symptoms ranging from no-start to engine stalling.
Common Symptoms
Below are typical signs that may accompany P0627 on a 2013 F-150. If you notice several of these, it’s worth having the system tested.
- No crank or no-start condition
- Engine stalls or sputters, especially at idle or during acceleration
- Intermittent starting problems or long cranks
- Fuel pump relay click or abnormal pump operation
- Check Engine Light with P0627 or related codes
These symptoms can overlap with other fuel or electrical issues, so a proper diagnostic check is important to avoid unnecessary repairs.
Common Causes
Several issues can trigger P0627. Here are the most frequent culprits, listed to help prioritize checks.
- Faulty fuel pump control module (FPCM) or a failing internal FPCM circuit
- Wiring harness damage, loose connectors, or corroded pins between the FPCM and fuel pump
- Blown fuse or weak/failed fuel pump relay
- Electrical noise or PCM software not properly calibrated or updated
Understanding these potential causes can help focus diagnostic efforts on electrical and control-system components rather than simply replacing the fuel pump.
How to Diagnose
To confirm P0627 and identify the underlying issue, follow these steps. If you are not comfortable with electrical diagnostics, consult a qualified technician.
- Verify the code with a reputable OBD-II scanner and check for any related codes (e.g., P0620, P0621, P0685).
- Inspect fuses and relays associated with the fuel pump circuit; replace any blown or weak components.
- Check battery voltage and charging system; ensure stable power supply to the fuel pump circuit.
- Test the fuel pump voltage at the pump connector with a multimeter to confirm proper signaling from the FPCM/PCM.
- Inspect wiring and connectors between the FPCM and the fuel pump for damage, corrosion, or loose pins; reseat or repair as needed.
- Review PCM/FPCM ground paths and any relevant corrosion or loose grounds that could affect signaling.
- Consider a software/ECU update or reflash if a service bulletin (TSB) exists for P0627 in your vehicle year and model.
After the diagnostic steps, you will have a better sense of whether the issue is mechanical (fuel pump) or electrical (FPCM or wiring) and can plan repairs accordingly.
Recommended Repairs
Repair options are typically chosen based on the diagnosed cause. Below are common paths technicians may take when addressing P0627.
- Replace the faulty fuel pump control module (FPCM) if confirmed defective
- Repair or replace damaged wiring or connectors between the FPCM and the fuel pump
- Replace blown fuses or a faulty fuel pump relay
- Replace the fuel pump assembly if it fails to supply adequate pressure even with proper signals
- Apply PCM software update or reflash if recommended by a service bulletin
Costs and timelines vary with the exact fault. In some cases, a simple fuse or connector fix suffices; in others, replacement of the FPCM or fuel pump may be necessary. A dealership or qualified shop can provide a precise estimate after diagnosis.
Summary
Code P0627 on a 2013 Ford F-150 points to a fault in the fuel pump control module circuit or its signaling. The issue affects how the fuel pump is controlled and can lead to starting problems, stalling, or erratic engine behavior. Diagnosing P0627 involves checking fuses, relays, wiring, grounds, the FPCM, and, if needed, updating PCM software. Depending on the root cause, repairs may range from a simple wiring fix or fuse replacement to replacing the FPCM or fuel pump. Professional diagnosis is often the most efficient path to a definitive fix.
