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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