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Home >> Mazda >> 2021 >> CX-9 Signature >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic - Engine Control System (3 Of 6) >> DTC P0181-00: Fuel Temperature Sensor Circuit Range/Performance Problem >> Notes
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DTC P0181-00: Fuel Temperature Sensor Circuit Range/Performance Problem: Notes

DTC P0181:00 DETECTION CONDITION AND POSSIBLE CAUSE

DTC P0181:00 Fuel temperature sensor circuit range/performance problem
DETECTION CONDITION
  • With the following conditions met, a condition has continued for 4 min in which the change in fuel temperature after engine start is less than 1°C {2°F}.

MONITORING CONDITIONS
  • Battery voltage: 8 V or more
  • Ignition switched ON (engine on)
  • Vehicle speed: 0 km/h {0 mph}
  • Change in engine coolant temperature amount after engine start: 40°C {72°F} or more
  • Elapsed time after engine start: 5 min
  • The following DTCs are not detected:
    • ECT sensor No. 1: P0117:00, P0118:00
    • Fuel temperature sensor: P0182:00, P0183:00
      • VSS: P0500:00

      Diagnostic support note

    • This is a continuous monitor (CCM).
    • The check engine light does not illuminate.
    • FREEZE FRAME DATA is not available.
    • Snapshot data is available.
    • DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION
  • Not applicable
POSSIBLE CAUSE
  • Low fuel pressure sensor/fuel temperature sensor connector or terminals malfunction
  • Fuel temperature sensor malfunction
  • PCM connector or terminals malfunction
  • PCM malfunction
SYSTEM WIRING DIAGRAM
  • Not applicable