Question

2003 Lexus Is300 with engine code P0037. What is the sensor called to fix this problem?

Answer 1

P0037 Oxygen sensor heater control circuit low Bank 1 Sensor 2

Sensor 2 is the downstream 02 sensor, when a 02 sensor degrades it is the heater circuit that usually goes out first

 

The downstream sensor or the catalytic monitor sensor heater code are fixed by replacing the sensor,

Answer 2

P0037 Lexus Code - Oxygen Sensor Heater Control Circuit Low Bank 1 Sensor 2
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