LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mazda >> 2007 >> 5 Touring, 2.3 L >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic [Engine Control System L3) >> DTC P0118 >> Notes
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC P0118: Notes

DTC P0118 DETECTION CONDITION AND POSSIBLE CAUSES

DTC P0118 ECT sensor circuit high input
DETECTION CONDITION 
  • The PCM monitors the ECT sensor signal at PCM terminal 2AK. If the PCM detects the ECT sensor voltage is above 4.58 V,  the PCM determines that the ECT sensor circuit has malfunction.

    • Diagnostic support note 

  • This is a continuous monitor (Engine cooling system).
  • MIL illuminates if the PCM detects the above malfunction condition during the first drive cycle.
  • FREEZE FRAME DATA is available.
  • The DTC is stored in the PCM memory.
POSSIBLE CAUSE 
  • ECT sensor malfunction
  • Connect or terminal malfunction
  • Open circuit in wiring harness between ECT sensor terminal A and PCM terminal 2AK
  • Short to power supply in wiring harness between ECT sensor terminal A and PCM terminal 2AK
  • Open circuit in wiring harness between ECT sensor terminal B and PCM terminal 2AA
  • PCM malfunction
G04315706
scientia non olet · About LEMON Manuals