P3653high severityPowertrain
GDI Injector Circuit Malfunction - Cylinder Specific
on 2011 Lincoln MKX 3.7L V6 · AWD
What this code means
A GDI fuel injector has an electrical circuit fault. GDI injectors require high-voltage driver circuits for precise fuel delivery at extremely high pressures.
Symptoms
- Check Engine Light
- Misfire on affected cylinder
- Rough idle
- Loss of power
- Exhaust smell
- Catalyst damage risk
Common causes
- Injector coil failure
- Injector driver circuit fault in PCM
- Wiring damage to injector
- Connector pin corrosion
- Injector stuck open or closed
Diagnostic steps
- Identify affected cylinder from freeze frame
- Test injector resistance
- Check injector driver waveform with oscilloscope
- Inspect injector connector
- Swap injectors between cylinders to confirm
Repair notes
Replace faulty GDI injector. Use OEM injectors - aftermarket injectors may not meet flow and spray specifications. Perform injector coding if required.
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Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1