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Home >> Mazda >> 2017 >> CX-9 Signature >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic - Engine Control System (3 Of 5) >> DTC P250A-00; Engine Oil Level Sensor Malfunction >> Notes

DTC P250A-00; Engine Oil Level Sensor Malfunction: Notes

NOTE:
  • To determine the malfunctioning part, proceed with the diagnostics from "Function Inspection Using M-MDS".

Details On DTCs

DETECTION CONDITION AND POSSIBLE CAUSE

DESCRIPTION Engine oil level signal: engine oil level sensor malfunction
DETECTION CONDITION Determination conditions
  • PCM receives abnormal signal from the engine oil level sensor.
  • If the engine oil level signal from the engine oil level sensor does not change, an oil level change due to driving conditions can be considered.
Preconditions
  • Battery voltage: 10-16 V
  • The following DTC is not detected:
    • Communication error between engine oil level sensor and PCM: U1100:00
      • Engine oil temperature sensor: P0197:00, P0198:00
  • Low-G (XY) sensor (built-into SAS control module) signal is normal
Drive cycle
  • 1
Self test type
  • CMDTC self test
Sensor used
  • Engine oil level sensor
  • Engine oil temperature sensor
  • Low-G (XY) sensor (built-into SAS control module)
FAIL-SAFE FUNCTION
  • Not applicable
VEHICLE STATUS WHEN DTCs ARE OUTPUT
  • Illuminates master warning light
  • Illuminates engine oil level warning light
  • Displays a message related to a engine oil level malfunction in the display.
POSSIBLE CAUSE
  • Engine oil level sensor malfunction
    • Clogging of oil passage to engine oil level sensor detection area
      • Engine oil level sensor internal application specific integrated circuit malfunction
  • Erratic signal to PCM
    • Engine oil level sensor connector or terminals malfunction
    • Short to ground in wiring harness between engine oil level sensor terminal C and PCM terminal 2BG
      • Open circuit in wiring harness between engine oil level sensor terminal C and PCM terminal 2BG
  • PCM malfunction

System Wiring Diagram