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Home › Chrysler › 2000 › Cirrus LX, 2.5 H › Repair and Diagnosis › Engine Performance › System › Engine Self-Diagnostics - With Codes › Diagnostic Tests › DTC P0125: Closed Loop Temp Not Reached › Testing

DTC P0125: Closed Loop Temp Not Reached: Testing

  1. Start engine and warm until engine coolant temperature is 80°F (27°C) or more. Turn ignition off. Disconnect Powertrain Control Module (PCM) harness connectors. PCM is located to left of Power Distribution Center (PDC) in engine compartment, next to air cleaner. Inspect harness connectors and clean/repair as necessary. Measure resistance between terminal No. 26 (Tan/Black wire) at PCM harness connector C1 and terminal No. 43 (Black/Light Blue wire) at PCM harness connector C2. See Figure . If resistance is less than 11 k/ohms, go to next step. If resistance is 11 k/ohms or more, replace ECT sensor.
  2. Turn ignition off. Inspect harness connectors and wiring. If no problems exist, go to next step. If any problems exist, repair as necessary.
  3. Inspect thermostat for proper operation. If thermostat is properly operating, go to next step. If thermostat is not properly operating, replace thermostat.
  4. If no other potential causes are remaining, replace PCM. After replacing PCM, PCM MUST be reprogrammed. See POWERTRAIN CONTROL MODULE  under PROGRAMMING.
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