P0309
Cylinder 9 Misfire Detected
2016-2016 Ford Explorer 3.5L V6 EcoBoost
High SeverityPowertrainGeneric (SAE)
The 2016 Ford Explorer is equipped with a 3.5L V6 turbocharged gasoline engine. Below you'll find detailed p0309 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
Misfire detected in cylinder 9.
Symptoms
- Check Engine Light
- Rough idle
Common Causes
- Worn plug #9
- Faulty coil #9
- Faulty injector #9
Diagnostic Steps
- Swap coil
- Inspect plug
- Test injector
Repair Notes
Diagnose cylinder 9.
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
P0309 on Other Vehicles
Common Questions
What does code P0309 mean on a 2016-2016 Ford Explorer?
P0309 stands for "Cylinder 9 Misfire Detected". Misfire detected in cylinder 9.
What are the symptoms of P0309 on a Ford Explorer?
Common symptoms of P0309 include: Check Engine Light, Rough idle.
What causes P0309 on a 2016-2016 Ford Explorer?
Common causes of P0309 include: Worn plug #9, Faulty coil #9, Faulty injector #9.
Last updated: March 2026
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