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check for blown fuse usually is problem if u blow the fuse for front power accy usually that fuse is connected to the obd ll link------obd ll not like obd [95 and older vehicles ] where u can ground out the connectors and get number
P1000 OBD II - Monitor Testing Not Completed This code means that the reader was unable to complete the test. It
doesn't mean there is anything wrong, kinda. It probably is due to the
chip. If your state inspection requires a clean test of the system and
they actually put a code reader on it for certification- you'll fail. If
they don't require a clean code, you'll be just fine.
Any time power to the pcm is interrupted you will see the P 1000 code.
That's all it is. So, if take your vehicle for an OBD smog check it will
fail if there is a P 1000 code, because the presumption is that the
battery had been disconnected to temporarily clear some other code.
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a blown fuse can cause the obd ll port not to work check the fuses under the hood and replace the blown one than rescan ur truck because a blown port fuse usually doesnt set off the service engine light
the check engine light can mean many things, what you need to do is take the vehicle to a place that can check the OBD codes, this will limit the items that are making yours light up,, if you click . on this link you can see just how many codes there are, and also what they mean
once you have those codes you can post them here,, and someone will assist you in a solution for your issue. Check around in your town, many places do this service for free ( checking the codes)
You will need to get an OBD reading. to know exactly why the light came on. the light alone doesnt mean anything specific, hence the need for the OBD reading to understand why. Most mechanics will do this reading for free.