P0521
Engine Oil Pressure Sensor Circuit Performance
System: Lubrication
Severity: medium
What does P0521 mean?
The DTC P0521 (Engine Oil Pressure Sensor Circuit Performance) is a fault code stored by the ECU when it detects a oil pressure sensor condition in the lubrication subsystem. It is commonly seen on European and Asian vehicles using Bosch, Continental, Siemens or Denso ECUs.
Common causes of P0521
- Failed oil pressure sensor
- Bad wiring
How to fix P0521
Verify with mechanical gauge first.
Tuning approach with DaVinci Deluxe · Cloud Edition
For P0521, DaVinci Deluxe · Cloud Edition offers the following ECU map adjustments and software solutions:
- (repair required — never tune low oil pressure)
Need to fix P0521 on your ECU?
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