P2186 - Engine Coolant Temperature Sensor 2 Circuit Intermittent/Erratic

Repair Importance Level: 3/3
Repair Difficulty Level: 2/3   
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Possible causes

  • Low coolant level
  • Faulty Engine Coolant Temperature Sensor
  • Stuck or leaking thermostat
  • Engine Coolant Temperature Sensor harness is open or shorted
  • Engine Coolant Temperature Sensor circuit poor electrical connection

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P2186 Description

Two engine coolant temperature sensors and one intake air temperature sensor are used by the Powertrain Control Module (PCM). When the engine is stopped and enough time has passed, the temperature of the engine will equalize to the ambient temperature. When an inappropriate temperature is detected after comparing the temperature readings of each sensor, a malfunction in the corresponding sensor is detected and a Diagnostic Trouble Code (DTC) is stored.
OBDII Code P2186 - Engine Coolant Temperature Sensor 2 Circuit Intermittent/Erratic - AutoCodes.com

P2186 Information for specific makes

  • P2186 DODGE Engine Coolant Temperature Sensor 2 Circuit Intermittent/Erratic

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P2186 Comments

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