P02AF
Cylinder 6 - Fuel Trim at Min Limit
What it means
P02AF means Cylinder 6 - Fuel Trim at Min Limit.
Check these first
- A leaking or clogged cylinder 6 fuel injector
- Too high fuel pressure
- A faulty oxygen sensor reading rich
- A vacuum leak at the cylinder 6 intake runner
- A faulty fuel pressure regulator
What to do next
- Read the long and short term fuel trim on a scan tool
- Run a fuel system leak down test on cylinder 6
- Check fuel pressure and the pressure regulator
- Compare the oxygen sensor reading to a known good one
- Replace injector 6 if it leaks down
- Clear the code and retest
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Updated
Generic SAE J2012 definition. Last updated 2026-10-10.