Injector Circuit/Open - Cylinder 3
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 p0203 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
Open circuit in the cylinder 3 fuel injector circuit.
Symptoms
- Check Engine Light
- Misfire cylinder 3
- Rough idle
Common Causes
- Faulty injector #3
- Open wiring
- PCM driver failure
Diagnostic Steps
- Test injector resistance
- Check wiring
- Swap injectors
Repair Notes
Replace injector #3 or repair wiring.
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
P0203 on Other Vehicles
Common Questions
What does code P0203 mean on a 2016-2016 Ford Explorer?
P0203 stands for "Injector Circuit/Open - Cylinder 3". Open circuit in the cylinder 3 fuel injector circuit.
What are the symptoms of P0203 on a Ford Explorer?
Common symptoms of P0203 include: Check Engine Light, Misfire cylinder 3, Rough idle.
What causes P0203 on a 2016-2016 Ford Explorer?
Common causes of P0203 include: Faulty injector #3, Open wiring, PCM driver failure.
Last updated: March 2026
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