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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 209 (Engine Control System (DTC/Circuit Diagnosis) (CUMMINS 5.0L) (3 Of 6)) >> DTC/Circuit Diagnosis >> DTC P0521-00: Engine Oil Pressure >> DTC Description >> DTC Detection Logic

DTC Detection Logic

WARNING: This page is about a different car, the 2018 Nissan Titan XD. However, it is still accessible from the selected car via links, so may be relevant.

The Engine Control Module (ECM) detected the engine oil pressure reading was higher or lower than the other absolute pressure sensors on the engine after the key switch has been turned OFF and the engine has stopped running.

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

P0521-00

(Engine Oil Pressure Sensor/Switch Range/Performance)

Diagnosis condition
  1. Ignition switch ON.
  2. Ignition switch OFF

Signal (terminal)

Oil pressure switch (143)

Threshold
  • Oil pressure > 0 kPa at ignition ON and engine OFF
  • Number of times the oil pressure switch indicates positive oil pressure before engine start ≥ 5 counts

Diagnosis delay time

Diagnostic runs continuously when the engine is running
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