DTC P0117:00 [L5]: Notes

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

DETECTION CONDITIONS & POSSIBLE CAUSES

DTC P0117:00	ECT sensor circuit low input
DETECTION CONDITION	The PCM monitors the ECT sensor signal If the PCM detects that 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. The DTC is stored in the PCM memory.
POSSIBLE CAUSE	ECT sensor connector or terminal malfunction PCM connector or terminal malfunction ECT sensor malfunction Short to ground in wiring harness between ECT sensor terminal A and PCM connector terminal 2AH Short circuit in ECT sensor signal circuit and ground circuit each other PCM malfunction
Courtesy of MAZDA MOTORS CORP.

DTC P0117:00

ECT sensor circuit low input

DETECTION CONDITION

The PCM monitors the ECT sensor signal If the PCM detects that 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.
The DTC is stored in the PCM memory.

POSSIBLE CAUSE

ECT sensor connector or terminal malfunction
PCM connector or terminal malfunction
ECT sensor malfunction
Short to ground in wiring harness between ECT sensor terminal A and PCM connector terminal 2AH
Short circuit in ECT sensor signal circuit and ground circuit each other
PCM malfunction

Courtesy of MAZDA MOTORS CORP.