LEMON Manuals: Even more car manuals for everyone
Home >> Mazda >> 2009 >> MX-5 Miata SV >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic [Engine Control System LF 2.0L) >> DTC P0117 [LF] >> Notes

DTC P0117 [LF]: Notes

DTC P0117 (LF) DETECTION CONDITION AND POSSIBLE CAUSE

DTC P0117 ECT sensor circuit low input
DETECTION CONDITION 
  • The PCM monitors the ECT sensor signal at PCM terminal 2AH. If the PCM detects the ECT sensor voltage below 0.2 V  , the PCM determines that the ECT sensor circuit has 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/Mode 12) is available.
  • The DTC is stored in the PCM memory.
POSSIBLE CAUSE 
  • Engine overheating (Cooling system malfunction)
  • 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
G06149965Courtesy of MAZDA MOTORS CORP.
scientia non olet · About LEMON Manuals