P0136 and P0141 O2 Sensor Heater Circuit Fault - 2001 Mitsubishi Eclipse GT Diagnosis
Hello, I own a 2001 Mitsubishi Eclipse GT and have recently noticed the "Service Engine Soon" warning light coming on. After using an OBD-II scanner, I've detected two diagnostic trouble codes: P0136 and P014
P0136 = Oxygen Sensor Circuit Malfunction (Bank 1, Sensor 2) P0141 = Oxygen Sensor Heater Circuit Malfunction (Bank 1, Sensor 2) The post-catalytic oxygen sensor in your 2001 Mitsubishi Eclipse GT may have failed. Before replacing the sensor, thoroughly inspect the wiring harness, electrical connections, voltage supply, and ground connections. Ensure all relevant fuses are intact. Regarding the temperature gauge: Is there any sign of coolant leakage or low coolant levels? How long has it been since your cooling system was flushed? Has the thermostat been checked or replaced? Can your OBD-II scanner display real-time engine temperature? Please update us on your findings and progress. Thanks for sharing!