P02B8
Cylinder 8 - Injector Restricted
What it means
P02B8 means Cylinder 8 - Injector Restricted.
Where it lives
For P02B8, the description names the injector as the part involved. The description of P02B8 puts it on cylinder 8.
Check these first
- A clogged injector on cylinder 8
- A weak injector 8 coil
- Corrosion at the injector 8 connector
- Contaminated fuel blocking the injector nozzle
- A failing fuel pump dropping pressure
What to do next
- Watch the cylinder 8 injector pulse on a scan tool
- Inspect the injector 8 connector and wiring
- Check fuel pressure and flow at the rail
- Clean or replace the restricted injector 8
- Drain and refill with clean fuel if contaminated
- Clear the code and retest
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Updated
Generic SAE J2012 definition. Last updated 2026-10-10.