P2C90
Crankcase Ventilation System - Hose A Disconnected
What it means
P2C90 means Crankcase Ventilation System - Hose A Disconnected.
Check these first
- Crankcase ventilation hose A pulled off its fitting
- A cracked or split hose A
- A missing hose A clamp
- A clogged crankcase vent that popped hose A loose
What to do next
- Inspect crankcase ventilation hose A for a full seat
- Check hose A for cracks or splits
- Test the hose A clamp and fittings
- Check the crankcase vent for a blockage
- Reconnect or replace hose A if it will not seal
- Clear the code and retest
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Updated
Generic SAE J2012 definition. Last updated 2026-10-10.