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DTC P0117:00: Notes

DTC P0117:00 (L3 WITH TC) DETECTION CONDITION AND POSSIBLE CAUSE

DTC P0117:00 ECT sensor circuit low input
DETECTION CONDITION 
  • The PCM monitors the ECT sensor signal. If the PCM detects the ECT sensor voltage is below 0.2 V for 5 s  , the PCM determines that the ECT sensor circuit has a malfunction.

Diagnostic support note 
  • This is a continuous monitor (engine cooling system).
  • The MIL illuminates if the PCM detects the above malfunction condition during first drive cycle.
  • FREEZE FRAME DATA (Mode 2)/Snapshot data is available.
  • DTCs are stored in the PCM memory.
POSSIBLE CAUSE 
  • ECT sensor connector or terminals malfunction
  • ECT sensor malfunction
  • Short to ground in wiring harness between ECT sensor terminal A and PCM terminal 2AH
  • PCM connector or terminals malfunction
  • ECT sensor signal circuit and ground circuit are shorted to each other
  • PCM malfunction
G06724029Courtesy of MAZDA MOTORS CORP.
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