2005 VOLVO S80 B5244S5/B5254T10 (P2)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

• Turbocharger wastegate sticking (turbo engines)
• Sagging dashboard
• Ignition coil failures
• Timing belt wear (requires replacement every 10 years or 150,000 km)

First checks

• Timing belt inspection and replacement history
• Condition of suspension bushings
• Signs of oil leaks around valve covers and turbo
• Function of electrical components

Before replacing parts

• Save fault codes and freeze-frame data before clearing anything.
• Check engine oil, coolant and transmission fluid using the correct temperature and service procedure.
• Verify power, ground, connectors, hoses, leaks and live data before replacing expensive parts.

Important notes

• Different engines offered in Europe vs North America; diesel more common in Europe.
• The 4.4L V8 was the top engine option in certain markets from 2004-2005.
• Some automatic transmissions feature adaptive electronics requiring dealer-level diagnostics for reset.