1. Flat batteries
2. Poor contact/open circuit in cables
3. Main switch turned off
4. One of the circuit breakers in the distribution box has tripped
5. Faulty key switch
6. Control lever not in neutral/control position not activated
7. Faulty stop relay
8. Faulty main relay
9. Faulty starter relay
10. Faulty starter motor/solenoid
11. Lack of fuel:
- fuel taps closed
- fuel tank empty
- wrong tank connected
12. Blocked fine fuel filter/pre-filter
(caused by contamination or fuel stratification at low temperature)
13. Air in the fuel system
14. Water/contamination in fuel
15. Boat abnormally loaded
16. Fouling on hull/propeller
17. Cablage to unit injector damaged
18. Faulty unit injectors
19. Insufficient air supply to engine:
- blocked air filter
- air leakage between turbocharger and engine inlet manifold
- fouled compressor section in turbocharger
- faulty turbocharger
- poor engine bay ventilation
20. Excessive coolant temperature
21. Coolant temperature too low
22. Oil level too low
23. Faulty / wrong propeller
24. Faulty engine mounting
25. Coolant level too low
26. Air in the freshwater system
27. Drive belt broken/slips
28. Faulty circulation pump
29. Closed seawater inlet
30. Blocked seawater inlet/pipe/filter
31. Defective impeller in seawater pump
32. Defective thermostat
33. Blocked heat exchanger insert
34. Blocked charge air cooler
35. Oil level too high
36. Water entry into engine
37. High back pressure in exhaust system
38. Faulty engine speed sensor
39. Stored fault codes
40. Check valve in feed pump leaks
Fault handling
90 47713726 12-2021 © AB VOLVO PENTA
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