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fault code help needed (code 12)

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Old 09-29-2009, 01:51 PM
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fault code help needed (code 12)

Check engine light came on today on my 86 4runner 22re. Jumped the connector and found out its code 12. The truck still runs fine. Any input on what it could be. Thanks
Old 09-29-2009, 08:53 PM
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Code 12 is Knock control sensor signal. Not sure what that does, but got the Diagnosis Codes from a FSM link on this site. Highly recommended.
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