Applicable Systems
EC220 Excavator
Symptoms
Engine oil pressure below safe threshold at idle; engine protection system may activate derate or shutdown.
Possible Causes
- Engine oil level low
- Oil pump worn
- Oil viscosity incorrect for ambient temperature
- Oil pressure relief valve stuck
Troubleshooting Steps
- Step 1: Check oil level at dipstick (engine off, level ground)
Oil at FULL mark - Step 2: Verify correct oil viscosity per ambient temp
Viscosity matches operator manual spec - Step 3: Check oil pressure with mechanical gauge
Mechanical gauge matches VTT reading - Step 4: Inspect oil pressure relief valve
Valve seats properly - Step 5: Replace oil pump if pressure still low
Oil pressure within spec at idle
How to Reset
Clear via Volvo Tech Tool after oil system repair; verify pressure at idle and rated RPM.
Common Replacement Parts
- Engine Oil Pump P/N: VOE15890246
- Oil Filter P/N: VOE15890247
Frequently Asked Questions
- Q: What is minimum oil pressure at idle for Volvo D16?
Minimum 0.15 MPa at low idle, 0.3-0.5 MPa at rated RPM. Below 0.1 MPa triggers critical engine protection.
Source: volvo fault codes reference
Category: Heavy Equipment