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Where are the oxygen sensors located on an 04 toyota celica?

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Old 18 Nov 2011, 06:54 pm   #1 (permalink)
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Default Where are the oxygen sensors located on an 04 toyota celica?
I know one of them is messed up, but i wanna know where they are located
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Old 18 Nov 2011, 07:09 pm   #2 (permalink)
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https://viewer.zoho.com/docs/tLYbdg
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Old 18 Nov 2011, 07:54 pm   #3 (permalink)
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Sensor 1 will be on the exhaust head pipe right out of the engine. Sensor 2 is on the exhaust pipe under the car right after the cat converter. They look kind of like a spark plug screwed into the exhaust pipe. If you connect the car to any simple OBDII code reader - it should give you a code that will tell you which one is "messed up". The number 1 connector should be available in the engine compartment. When you trace the sensor 2 wires - you might find they go into the car under the passenger seat. i know that is where Toyota puts some of them. You might have to remove the seat to access the connector.
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