Possible causes – Exhaust leak near O2 sensor– Faulty O2 sensor– Fuel contamination Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P2097 Description The ECM has detected a fault with the downstream O2 sensor P2097 Information for
Possible causes – Exhaust leak near rear O2 sensor– Faulty rear O2 sensor– Fuel contamination Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P2097 SUBARU Description The ECM has detected a fault with the downstream O2 sensor
Possible causes – Faulty Heated Oxygen Sensor– Heated Oxygen Sensor harness is open or shorted– Heated Oxygen Sensor circuit poor electrical connection– Exhaust leaks– Contaminated Heated Oxygen Sensor Tech notes Before replacing the Heated Oxygen Sensor, inspect the sensor connector
Possible causes – Faulty Heated Oxygen Sensor– Heated Oxygen Sensor harness is open or shorted– Heated Oxygen Sensor circuit poor electrical connection– Exhaust leaks– Contaminated Heated Oxygen Sensor Tech notes Before replacing the Heated Oxygen Sensor, inspect the sensor connector
Possible causes – Faulty Heated Oxygen Sensor– Heated Oxygen Sensor harness is open or shorted– Heated Oxygen Sensor circuit poor electrical connection– Exhaust leaks– Contaminated Heated Oxygen Sensor Tech notes Before replacing the Heated Oxygen Sensor, inspect the sensor connector
Possible causes – Faulty Heated Oxygen Sensor– Heated Oxygen Sensor harness is open or shorted– Heated Oxygen Sensor circuit poor electrical connection– Exhaust leaks– Contaminated Heated Oxygen Sensor Tech notes Before replacing the Heated Oxygen Sensor, inspect the sensor connector
P2097 HYUNDAI – Post Fuel Trim Too Rich-B1