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Home >> Mazda >> 2013 >> CX-5 Touring, AWD >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic (Engine Controls) (4 Of 4) >> DTC P2305-00: Ion Sensor No.2 Circuit Problem >> Notes

DTC P2305-00: Ion Sensor No.2 Circuit Problem: Notes

DETECTION CONDITION AND POSSIBLE CAUSE

DTC P2305:00 Ion sensor No.2 circuit problem
DETECTION CONDITION 
  • After the engine is started, when the engine speed is 2,000 rpm or less  , the signal input to the PCM from ion sensor No.2 is in error.

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.
  • The DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION  -
POSSIBLE CAUSE 
  • Cylinder No.2 misfire
  • Ignition coil/ion sensor No.2 connector or terminals malfunction
  • Short to ground or open circuit in ion sensor No.2 power supply circuit
    • Short to ground in wiring harness between ENGINE2 15 A fuse and ignition coil/ion sensor No.2 terminal A
    • ENGINE2 15 A fuse malfunction
    • Open circuit in wiring harness between main relay terminal C and ignition coil/ion sensor No.2 terminal A
  • Open circuit in wiring harness between ignition coil/ion sensor No.2 terminal D and body ground
  • Short to ground in wiring harness between ignition coil/ion sensor No.2 terminal C and PCM terminal 1BF
  • PCM connector or terminals malfunction
  • Short to power supply in wiring harness between ignition coil/ion sensor No.2 terminal C and PCM terminal 1BF
  • Open circuit in wiring harness between ignition coil/ion sensor No.2 terminal C and PCM terminal 1BF
  • Ion sensor No.2 malfunction
  • PCM malfunction
G09074033