Cylinder 5 Air-Fuel Ratio Imbalance

Check these first

• A dirty or faulty fuel injector on cylinder 5
• A weak spark plug on cylinder 5
• An intake manifold leak near cylinder 5
• Low compression on cylinder 5
• A fuel pressure or fuel temperature sensor fault

What to do next

1. Read the cylinder 5 fuel trim on a scan tool
2. Swap the cylinder 5 injector and see if the fault follows
3. Check the cylinder 5 spark plug
4. Check for an intake leak near cylinder 5
5. Run a compression test on cylinder 5
6. Clear the code and retest

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