P0065
Air Assisted Injector Control Range/Performance
What it means
P0065 means Air Assisted Injector Control Range/Performance.
Where it lives
For P0065, the part to look at first is the injector named here.
Check these first
- A restricted or clogged air passage feeding the air assisted injector
- A weak or dirty air assisted injector
- Low fuel pressure reaching the air assisted injector
- A clogged fuel filter lowering supply pressure
- Wiring or a connector fault on the air assisted injector control circuit
What to do next
- Check fuel pressure and flow at the air assisted injector
- Inspect the air supply passage to the injector for blockage
- Test the air assisted injector control circuit for opens or shorts
- Clean or replace the air assisted injector if it is restricted
- Replace the fuel filter if flow is low
- Clear the code and retest
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Updated
Generic SAE J2012 definition. Last updated 2026-10-10.