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Old 07-28-2009, 05:01 PM   #1 (permalink)
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Oxygen Sensor Heater Resistance

Alright elctronic geeks, I have searched this whole site for this info. Maybe one of you knows it. To simulate the 02 Sensor heater working I know I need a resistance between 11-32 ohms, how do I calculate which resistor to use? If you could explain to me how to select them I would greatly appreciate it, or direct me to a place where I can read about this stuff.
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Old 07-29-2009, 06:46 AM   #2 (permalink)
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I hope this is what you're looking for:

Inspecting heater resistance of O2 sensors (Bank 1,2 sensor 1 & Bank 1 sensor 2) (Bank 2 sensor 2).
Disconnect O2 sensor connectors, use ohmmeter and measure resistance between +B & HT terminals. Resistance should be 11-16 ohms at 20 degrees C (68 degrees F). Replace O2 sensor if not to spec.
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Old 07-29-2009, 08:27 AM   #3 (permalink)
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Yea, I got that too. But as I know nothing about resistors, I thought they differed due to the voltage. But I am not seeing any change. So it looks like just a standard 11-20 OHM resistor will work.
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Old 08-04-2009, 11:21 AM   #4 (permalink)
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Update: 2 10Watt 50Ohm resistors wired in parallel will send a 25ohm resistance and simulate a heater. They get pretty hot so put them in something solid, dont wrap in electrical tape or anything like that.
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