Yanmar Marine Crankcase Pressure High
The YANMAR-MARINE-CRANKCASE-PRESSURE (Yanmar) diesel fault code means: Yanmar Marine Crankcase Pressure High. This is a serious severity code.
Unverified. We could not confirm this code's definition against freely available manufacturer documentation, so treat the meaning, severity and fix guidance on this page as unconfirmed. Check it against the manufacturer's service information for your exact model and serial range before acting on it. This page is kept out of search engines for that reason, and we are working through this family manual by manual.
- Keep driving?
- Limited driving only
- DIY difficulty
- advanced
- Estimated cost
- $50-$8,000
What Are the Symptoms of YANMAR-MARINE-CRANKCASE-PRESSURE?
- Oil mist in engine bay
- CCV lamp on 6LY engines
What Causes YANMAR-MARINE-CRANKCASE-PRESSURE? (Most Likely First)
- Plugged CCV filter/separator Likely
- Worn cylinder/rings (high hour engine) Possible
- Failed turbo seals Possible
Can I Still Drive with YANMAR-MARINE-CRANKCASE-PRESSURE?
Limited driving only. YANMAR-MARINE-CRANKCASE-PRESSURE is rated serious severity. Keep trips short and get it diagnosed soon rather than waiting for symptoms to worsen.
Frequently Asked Questions
What is Yanmar code MARINE-CCV?
Yanmar MARINE-CCV: Yanmar Marine Crankcase Pressure High.
Can I keep operating with Yanmar code MARINE-CCV?
Limited operation only -- finish task then shut down.
How much does Yanmar MARINE-CCV cost to fix?
Typical cost: $50-$8,000. Yanmar SmartAssist / YDT diagnostic software is often required.
Mechanics Guide Step-by-step diagnosis
How Do You Diagnose YANMAR-MARINE-CRANKCASE-PRESSURE?
Service CCV filter element.
Measure crankcase blow-by with manometer.
Inspect turbo drain for oil accumulation.
Which Vehicles Commonly Get YANMAR-MARINE-CRANKCASE-PRESSURE?
- Hunter / Beneteau / Catalina sailboats with Yanmar 3JH / 4JH
- Trawlers with Yanmar 6LY / 6LF series
- Yachts with Yanmar 8LV / 6LY400 common-rail marine diesels
- Workboats with Yanmar 4LV / 4JH series marine propulsion
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