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. If the PCM detects the ECT sensor voltage is above 4.6 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.
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| POSSIBLE CAUSE |
- ECT sensor malfunction
- Connect or terminal malfunction
- Open circuit in the wiring harness between ECT sensor terminal A and PCM terminal 1M
- Short to power supply in the wiring harness between ECT sensor terminal A and PCM terminal 1M
- Open circuit in the wiring harness between ECT sensor terminal B and PCM terminal 2H
- PCM malfunction
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 Courtesy of MAZDA MOTORS CORP.
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