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DTC P0520: 00 Oil Pressure Switch Circuit Problem: Notes

DTC P0520:00 DETECTION CONDITION AND POSSIBLE CAUSES (SKYACTIV-G 2.0, SKYACTIV-G 2.5)

DTC P0520:00  Oil pressure switch circuit problem 
DETECTION CONDITION 
  • The oil pressure switch is off for a continuous 5 s  even though the engine is stopped.

Diagnostic support note 
  • This is a continuous monitor (other).
  • The check engine light does not illuminate.
  • FREEZE FRAME DATA (Mode 2)/Snapshot data is not available.
  • DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION  Not applicable
POSSIBLE CAUSE 
  • Oil pressure switch connector or terminals malfunction
  • PCM connector or terminals malfunction
  • Open circuit in wiring harness between oil pressure switch terminal A and PCM terminal "IP"
  • Oil pressure switch malfunction
  • PCM malfunction
G09757951Courtesy of MAZDA MOTORS CORP.