P0128-Forced Limited Power Excessive High Coolant Temp: Notes

Fig 1: Engine Coolant Temperature Sensor Circuit Schematic

Courtesy of CHRYSLER LLC

1. When Monitored  : With the ignition on engine running.
2. Set Condition  : The Engine Coolant Temperature (ECT) Sensor exceeds 130°C (265°F) at the PCM. One trip Fault

For a complete Powertrain Control Module Circuit Diagram, refer to SCHEMATICS AND DIAGRAMS .