P0521high severityPowertrain
Engine Oil Pressure Sensor/Switch Range/Performance
on 1994-2007 Dodge Ram 2500 5.9L I6 Cummins Diesel · 4WD
What this code means
Oil pressure sensor reading is out of expected range.
Symptoms
- Oil pressure gauge erratic
- Warning light flickering
Common causes
- Sensor fault
- Oil pressure fluctuating
- Worn oil pump
- Wrong viscosity oil
Diagnostic steps
- Test with mechanical gauge
- Check oil level and condition
- Test sensor
- Verify correct oil viscosity
Repair notes
Verify actual pressure. Replace sensor if pressure is good.
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Other Powertrain codes on this vehicle
P0001
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P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
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P0004
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P0005
Fuel Shutoff Valve A Control Circuit/Open
P0006
Fuel Shutoff Valve A Control Circuit Low
P0007
Fuel Shutoff Valve A Control Circuit High
P0008
Engine Position System Performance - Bank 1
P0009
Engine Position System Performance - Bank 2
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1