Audi Forum - View Single Post - constant problem w/ oil sensor light activating when engine warm and ticking over??

a8 tech · 08-27-2007, 03:55 PM

Disconnect the oil light sensor and bridge the contact of the wire to earth,if the light stays out the wiring is ok but the dash insert may be suspect as you say the oil pressure is ok.The dash gives out 12 volt feed to the switch,the switch is earthed via the threaded connection to the engine,when the oil pressure drops the contact in the switch allows the circuit to become open circuit(no earth) and the light comes on,so if the wire to the switch is given a earth then the light should stay off and this would indicate the condition of the circuit.Also if this is akl engine code you can increase the idle speed via adaption channel 13 in engine electrics to illiminate low voltage from the alternator

08-27-2007, 03:55 PM	#2 (permalink)
a8 tech Expert Join Date: Apr 2007 Location: not telling you Posts: 649 Gallery: (0)	Disconnect the oil light sensor and bridge the contact of the wire to earth,if the light stays out the wiring is ok but the dash insert may be suspect as you say the oil pressure is ok.The dash gives out 12 volt feed to the switch,the switch is earthed via the threaded connection to the engine,when the oil pressure drops the contact in the switch allows the circuit to become open circuit(no earth) and the light comes on,so if the wire to the switch is given a earth then the light should stay off and this would indicate the condition of the circuit.Also if this is akl engine code you can increase the idle speed via adaption channel 13 in engine electrics to illiminate low voltage from the alternator __________________ i use vag com 805 Last edited by a8 tech : 08-27-2007 at 03:58 PM.