Question about Actron CP9550 OBD II & CAN Code Reader

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CAN fail error when trying to communicate

When i hook up my scanner to my recepticle under the dashboard of my 2000 jeep cherokee classic 4.0 liter vehicle ,it goes through an LCD diagnostic ,then says comunicating , and then shows a CAN fail error...What am I doing wrong

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You have to have the contact on, all lights on the dash must be on otherwise you get this error.

Posted on Apr 19, 2014

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