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Home >> Jeep >> 2023 >> Grand Cherokee Altitude, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 31 (Hybrid Control Processor Module (HCP) - DTCS P1AC6-00 To P1C68-00) >> DTC Troubleshooting >> P1B73-00 Electric Coolant Heater Temperature Inlet Sensor Performance >> Theory Of Operation

Theory Of Operation

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The Electric Coolant Heater Temperature Sensor (ECHTS) is located in Electric Coolant Heater and is not serviceable. If the Sensor goes bad, the Electric Coolant Heater must be replaced.