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Home >> Jeep >> 2025 >> Grand Cherokee Altitude, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 110 (Hybrid Control Processor Module (HCP) - DTCS P1B02-00 To P1C64-00) >> DTC Troubleshooting >> P1B73-00 Electric Coolant Heater Temperature Inlet Sensor Performance >> Theory Of Operation

Theory Of Operation

WARNING: This page is about a different car, the 2025 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

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.

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