Final answer:
Without the specific power rating of the wide band oxygen sensor heater, an exact current draw cannot be provided, but typically these heaters draw between 0.5 and 1.5 Amps.
Step-by-step explanation:
The current drawn by a wide band oxygen sensor heater can vary based on its design and the vehicle's requirements. Normally, these sensors operate at a voltage provided by the vehicle, usually around 12V, similar to other electrical components in a vehicle.
To calculate the current (I) in amperes (Amps), you would use the formula P=IV, where P is the power in watts and V is the voltage in volts. However, without the specific power rating (P) of the oxygen sensor heater, it is not possible to provide an exact current draw.
Generally, the current draw for these heaters is in the range of 0.5 to 1.5 Amps, but for an accurate value, the power rating or resistance and the voltage have to be known. For example, if we know that a similar electrical component, like a car headlight using LEDs, operates at about 15W with a 12V supply, the current drawn (I) would be 15W / 12V = 1.25 Amps.