Volvo Penta D4 Operator's Manual page 88

Fault code register
1.6.6 R
Explanation: Incorrect oil pressure.
Reaction: Engine power is reduced.
Action:
• Check the oil level in the engine. Please refer to "Maintenance: Lubrication" to check and top the oil up.
• Check that the oil filters are not blocked.
• Check that no leakage occurs.
• Contact a Volvo Penta workshop if the fault remains.
1.6.7 R
Explanation: Incorrect fuel pressure.
Reaction: Engine power is reduced.
Action:
• Check the fuel level.
• Open the fuel taps and check that no leakage occurs.
• Check that the fuel filters are not blocked. Please refer to "Maintenance: Fuel system"
• Contact a Volvo Penta workshop if the fault remains.
1.7.1–1.7.6 O
Explanation: Injector system failure, injector 1–6.
Reaction: Engine power is reduced.
Action:
• Please contact a Volvo Penta workshop.
1.7.7 R
Explanation: Serious fault in the fuel system. Fault in the supply e.g. leakage in pipes and connections.
Reaction: Engine power is reduced or engine stops.
Action:
• Please contact a Volvo Penta workshop.
1.7.8 R
Explanation: Fault in fuel pump monitoring.
Reaction: Engine power is reduced.
Action:
• Please contact a Volvo Penta workshop.
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