Common Symptoms
- Check engine light illuminated
- Rough idle or engine misfire
- Reduced engine power or hesitation
- Poor fuel economy
- Hard starting or extended cranking
- Engine runs on fewer cylinders
Most Likely Root Causes
- Faulty fuel injector on cylinder 3
- Short to voltage in injector wiring harness
- Damaged or corroded injector connector
- Failed fuel injector driver circuit in ECM
- Chafed wiring causing short to power
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Component Location
Cylinder 3 fuel injector is located on the engine's fuel rail at the third cylinder position in the firing order.
Manufacturer Notes
High-side circuit faults typically indicate wiring damage or ECM driver issues rather than injector internal failures.
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