With a genuine Hyundai sensor the output is normally high (11~12V). Now place something metallic close to the face of the sensor and the signal voltage should switch low (approx 0V). Move the metal away from the sensor and the voltage should switch high again. I did this test and behaves exactly as you describe.
What is the Cost to Diagnose the Code P1693 Chevrolet? Labor: 1.0. The cost to diagnose the P1693 Chevrolet code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour. hi scott have a 2010 kia ceed crdi with intermittent non start.read codes from immobiliser and got p1693 and p1696 kia dealer have replaced immobiliser antenna but fault back after 2 weeks same codes.Back at dealers now but they say car wont fail to start suggest we have it back and return when fault reappears