Description
OBD-II Trouble Code Description for P0197 Lincoln
Engine Oil Temperature Sensor Low
What does this mean?
OBD2 Code P0197 Lincoln definition:
The Engine Oil Temperature (EOT) sensor is a thermistor device in which resistance changes with temperature. The electrical resistance of a thermistor decreases as the temperature increases and the resistance increases as the temperature decreases. The varying resistance affects the voltage drop across the sensor terminals and provides electrical signal to the Powertrain Control Module (PCM) corresponding to temperature. Thermistor-type sensors are considered passive sensor. A passive sensor is connected to a voltage divider network so that varying the resistance of the passive sensor causes a variation in total current flow. Voltage that is dropped across a fixed resistor in a series with the sensor resistor determines the voltage signal at the PCM. This voltage signal is equal to the reference voltage minus the voltage drop across the fixed resistor. The EOT sensor measures the temperature of the engine oil. The sensor is typically threaded into the engine oil lubrication system. The PCM can use the EOT sensor input to determine the following: – On variable cam timing (VCT) applications the EOT input is used to adjust the VCT control gains and logic for camshaft timing. – The PCM can use the EOT sensor input in conjunction with other PCM inputs to determine oil degradation – The PCM can use EOT sensor input to initiate a soft engine shutdown. To prevent engine damage from occurring as a result of high oil temperature, the PCM has the ability to initiate a soft engine shutdown. Whenever engine RPM exceeds a calibrated level for a certain period of time, the PCM will begin reducing power by disabling engine cylinders.
Symptoms
Possible sumptoms of OBD code P0197 Lincoln
– Engine Light ON (or Service Engine Soon Warning Light) – Lack/Loss of Power – Engine Surge
Causes
Possible causes of OBD code P0197 Lincoln
– Engine not at operating temperature. – Cooling system problem of stuck thermostat. – EOT circuit failure. – Bad EOT sensor – Damaged PCM. The Error code is generally activated on detection of the following conditions: Indicates EOT signal voltage is low (high temperature).
Possible Solutions
1. Disconnect the EOT sensor harness connector 2. Check for opposite failure with EOT disconnected 3. If DTC P0198 Lincoln is present replace EOT sensor
The OBD2 Code Information Be Applicable For Lincoln:
2013 Lincoln MKZ,2013 Lincoln MKT,2013 Lincoln MKS,2013 Lincoln MKC,2012 Lincoln MKZ,2011 Lincoln MKX,2010 Lincoln MKZ,2010 Lincoln MKT,2009 Lincoln MKS,2009 Lincoln C Concept,2008 Lincoln MKT Concept,2007 Lincoln Navigator,2007 Lincoln MKZ,2007 Lincoln MKX,2007 Lincoln MKR Concept,2006 Lincoln Zephyr,2006 Lincoln Mark LT,2006 Lincoln MKS Concept,2004 Lincoln Mark X Concept,2004 Lincoln Aviator Concept,2003 Lincoln Town Car,2003 Lincoln Aviator,2001 Lincoln MK9
Note:
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