GDI High-Pressure Fuel Pump Performance
2016-2016 Ford Explorer 3.5L V6 EcoBoost
The 2016 Ford Explorer is equipped with a 3.5L V6 turbocharged gasoline engine. Below you'll find detailed p3650 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
The gasoline direct injection (GDI) high-pressure fuel pump is not maintaining the commanded fuel rail pressure. GDI systems operate at 200-3000+ PSI.
Symptoms
- Check Engine Light
- Long crank time
- Rough idle
- Reduced power
- Engine stalling
- Fuel smell from engine bay
Common Causes
- Worn fuel pump cam follower
- Internal pump wear
- Low feed pressure from tank pump
- Fuel pump driver module fault
- Contaminated fuel
Diagnostic Steps
- Monitor fuel rail pressure vs commanded
- Check low-pressure feed pump output
- Inspect cam follower for wear
- Test fuel pump driver module
- Check fuel quality
Repair Notes
Replace high-pressure fuel pump and cam follower together. Always replace the follower to prevent repeat failure. Check camshaft lobe for wear.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P3650 on Other Vehicles
Common Questions
What does code P3650 mean on a 2016-2016 Ford Explorer?
P3650 stands for "GDI High-Pressure Fuel Pump Performance". The gasoline direct injection (GDI) high-pressure fuel pump is not maintaining the commanded fuel rail pressure. GDI systems operate at 200-3000+ PSI.
What are the symptoms of P3650 on a Ford Explorer?
Common symptoms of P3650 include: Check Engine Light, Long crank time, Rough idle, Reduced power, Engine stalling, Fuel smell from engine bay.
What causes P3650 on a 2016-2016 Ford Explorer?
Common causes of P3650 include: Worn fuel pump cam follower, Internal pump wear, Low feed pressure from tank pump, Fuel pump driver module fault, Contaminated fuel.
Last updated: March 2026
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