emissions

check fuses under hood and in car, then check for a connection problem it may be what they are using especially if one works from another place like auto parts.

Checked fuses. Changed one for lighter and found one in trunk of car. Tested six times and still would not read. Car was part of recall for wiring harness. Wondering if that changed connection wires. Having another emissions test today at dealer where I purchased car to see if it was testing station and not my car. will let you know if it works.