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.
- Keep driving?
- Limited driving only
- DIY difficulty
- advanced
- Estimated cost
- $50-$8,000
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Common Symptoms
- Oil mist in engine bay
- CCV lamp on 6LY engines
Probable Causes (Ranked by Likelihood)
- Plugged CCV filter/separator Likely
- Worn cylinder/rings (high hour engine) Possible
- Failed turbo seals Possible
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
Step-by-Step Diagnostic Procedure
Service CCV filter element.
Measure crankcase blow-by with manometer.
Inspect turbo drain for oil accumulation.
Commonly Affected Vehicles
- 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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