DTC P0197-00: Engine Oil Temperature Sensor Circuit Low Input: Notes

DTC P0197:00 DETECTION CONDITION AND POSSIBLE CAUSE

DTC P0197:00	Engine oil temperature sensor circuit low input
DETECTION CONDITION	The PCM monitors the input signal from the engine oil temperature sensor. If the voltage from the engine oil temperature sensor is below 0.1 V for 4 s, the PCM determines that the engine oil temperature sensor circuit has a malfunction. MONITORING CONDITIONS Battery voltage: 8-20 V 0.5 s have elapsed after the ignition was switched ON (engine off or on) Diagnostic support note This is a continuous monitor (CCM). The check engine light does not illuminate. FREEZE FRAME DATA is not available. Snapshot data is available. DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	Not applicable
POSSIBLE CAUSE	Engine oil pressure sensor/engine oil temperature sensor connector or terminals malfunction Engine oil temperature sensor malfunction Short to ground in wiring harness between engine oil pressure sensor/engine oil temperature sensor terminal E and PCM terminal 1AU PCM connector or terminals malfunction Engine oil temperature sensor signal circuit and ground circuit are shorted to each other PCM malfunction
Courtesy of MAZDA MOTORS CORP.