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International Automotive Technicians Network
Re: 2002 Nissan Sentra 1.8 O2 Heater Codes
Posted to Technical Discussion Forum on 11/27/2005

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You could test the current draw on the heater circuit to see if it is pulling the correct amperage? If there is not current draw, then find out if there is being voltage supplied or if the circuit is ... Login to read more.