P2186 OBD II Trouble Code Engine Coolant Temperature Sensor 2 Circuit Intermittent

Symptoms of P2186 OBD II Trouble Code

  • Rough engine idle on cold start
  • Hesitation or stumble on acceleration
  • Rich exhaust smell, especially on cold start
  • Possible engine overheating
  • Electric cooling fan running constantly or not running at all

Common Causes of P2186 OBD II Trouble Code

  • Low engine coolant level
  • Faulty thermostat
  • Bad #2 ECT sensor
  • Open or shorted wiring and/or connectors in #2 ECT sensor circuit

Severity of P2186 OBD II Trouble Code

Because the ECT sensor plays such an important role in engine drivability, the code P2186 should be addressed urgently.