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DTC P0117: Notes

DTC P0117 [L3 WITH TC] DETECTION CONDITION AND POSSIBLE CAUSE

DTC P0117 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  , 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 is available.
  • DTCs are stored in the PCM memory.
POSSIBLE CAUSE 
  • ECT sensor malfunction
  • Connect or terminal malfunction
  • Short to ground in the wiring harness between ECT sensor terminal A and PCM connector terminal 2AH
  • Short to each wiring harness in ECT signal circuit and ECT ground circuit
  • PCM malfunction
G04954367Courtesy of MAZDA MOTORS CORP.
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