Asked in Computer Hardware
2000 mbz ml320 where do the ground wires from the 2nd o2 sensors heater wires connect do they ground to the body or through the computer if they connect to the computer which pins on which computer?
On the Mercedes ml320 you should be able to ground the o2 sensor to the body of the car. Just find an unpainted section and stick its ground wire on. If this does not work, try adding an isolation capacitor between the grounding pin and chassis as well. If this still doesn't work, got to the dealer.