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O2 Sensor

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Discussion Starter · #1 ·
Can anyone please tell me the location of the O2 sensor on a 94 LS320. I got a "check engine" on my dash. I've checked the fuel cap. My fault code is # 21 on pin #4 which equates to a circut interuption on the O2 sensor.
Thanks in advance for the help.
 
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SunGuy61
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