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Home >> Mazda >> 2011 >> RX-8 R3, 1.3 4 >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic [Engine Control System] >> DTC P0522
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DTC P0522

DTC P0522 Oil pressure sensor circuit low input
DETECTION CONDITION 
  • The voltage of oil pressure sensor input terminal is less than 0.2 V for 0.5 s or more  .

Diagnostic support note 
  • This is a continuous monitor (other).
  • The MIL does not illuminate.
  • FREEZE FRAME DATA (Mode 2/Mode 12) is not available.
  • The DTC is stored in the PCM memory.
POSSIBLE CAUSE 
  • Oil pressure sensor connector or terminals malfunction
  • Short to ground in wiring harness between oil pressure sensor terminal C and PCM terminal 2AA
  • Short to ground in wiring harness between oil pressure sensor terminal B and PCM terminal 2R
  • PCM connector or terminals malfunction
  • Open circuit in wiring harness between oil pressure sensor terminal C and PCM terminal 2AA
  • Open circuit in wiring harness between oil pressure sensor terminal B and PCM terminal 2R
  • Oil pressure sensor malfunction
  • PCM malfunction
G07878124
DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1 VERIFY RELATED REPAIR INFORMATION AVAILABILITY 
  • Verify related Service Bulletins and/or on-line repair information availability.
  • Is any related repair information available?
 Yes Perform repair or diagnosis according to the available repair information.
  • If the vehicle is not repaired, go to the next step.
No Go to the next step.
2 INSPECT OIL PRESSURE SENSOR CONNECTOR FOR POOR CONNECTION 
  • Turn the ignition switch off.
  • Disconnect the oil pressure sensor connector.
  • Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
  • Is there any malfunction?
 Yes Repair or replace the connector and/or terminals, then go to Step 7.
No Go to the next step.
3 INSPECT OIL PRESSURE SENSOR CIRCUIT FOR SHORT TO GROUND 
  • Oil pressure sensor connector is disconnected.
  • Turn the ignition switch off.
  • Inspect for continuity between the following circuits:
    • Oil pressure sensor terminal C (wiring harness-side) and body ground
    • Oil pressure sensor terminal B (wiring harness-side) and body ground
  • Is there continuity?
 Yes If the short to ground circuit could be detected:
  • Repair or replace the wiring harness for a possible short to ground.

If the short to ground circuit could not be detected:
Go to Step 7.
No Go to the next step.
4 INSPECT PCM CONNECTOR FOR POOR CONNECTION 
  • Turn the ignition switch off.
  • Disconnect the PCM connector.
  • Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
  • Is there any malfunction?
 Yes Repair or replace the connector and/or terminals, then go to Step 7.
No Go to the next step.
5 INSPECT OIL PRESSURE SENSOR CIRCUIT FOR OPEN CIRCUIT 
  • Oil pressure sensor and PCM connectors are disconnected.
  • Turn the ignition switch off.
  • Inspect for continuity between the following circuits:
    • Oil pressure sensor terminal C (wiring harness-side) and PCM terminal 2AA (wiring harness-side)
    • Oil pressure sensor terminal B (wiring harness-side) and PCM terminal 2R (wiring harness-side)
  • Is there continuity?
 Yes Go to the next step.
No Repair or replace the wiring harness for a possible open circuit, then go to Step 7.
6 INSPECT OIL PRESSURE SENSOR 
 Yes Replace the oil pressure sensor, then go to the next step.
(See OIL PRESSURE SENSOR REMOVAL/INSTALLATION ).
No Go to the next step.
7 VERIFY TROUBLESHOOTING OF DTC P0522 COMPLETED 
  • Make sure to reconnect all disconnected connectors.
  • Clear the DTC from the PCM memory using the M-MDS.

    (See AFTER REPAIR PROCEDURE ).

  • Perform the KOER self test.

    (See KOEO/KOER SELF TEST ).

  • Is the same DTC present?
 Yes Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION ).
No Go to the next step.
8 VERIFY AFTER REPAIR PROCEDURE 
 Yes Go to the applicable DTC inspection.
(See DTC TABLE ).
No DTC troubleshooting completed.
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