Common Symptoms
- Check engine light illuminated
- Rough idle or engine misfire
- Poor fuel economy
- Loss of power or hesitation during acceleration
- Strong fuel odor from exhaust
- Engine runs rough or shakes at idle
Most Likely Root Causes
- Faulty fuel injector on cylinder 6
- Damaged or corroded injector wiring harness
- Poor electrical connection at injector connector
- Failed fuel injector driver circuit in PCM
- Shorted or open circuit in injector wiring
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Component Location
Cylinder 6 fuel injector is located at the intake side of cylinder 6 on the engine block, connected to the fuel rail and engine wiring harness.
Manufacturer Notes
Some manufacturers recommend checking for updated PCM software if multiple injector circuit codes are present simultaneously.
Also diagnosing J1939 SPN/FMI codes?
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