2007 Suzuki Grand Vitara Q&A

2007 Suzuki Grand Vitara Question: Emissions Failure due to a N/A reading all across the board

took my suzuki grand vitara to an emissions testing station. They failed it because they could not get a reading. Said it was probably a bad fuse or a loose wire. Fuses are good. I have electrical power on both accessory outlets, and went to autozone where they plugged their OBD Meter, with a Ok reading on everything. However there was a N/A reading for the A/C Refrigerant and Heat Catalyst. Cars A/C is working perfectly. Any ideas???? -
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