Circuit issues on 2013 Mazda BT-50 fuel injector
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Asked by Alfredo
My 2013 Mazda BT-50 has an open circuit on injector three. Sometimes after a reset, the injector comes good, but other times the fault returns. What could be the problem?
Answered by CarsGuide
29 May 2024An open circuit on a fuel injector is usually caused by either a broken wire to the injector, a loose terminal somewhere in the electrical circuit that drives the injector or a burned-out coil in the injector itself.
Changing the suspect injector will tell you if the coil is the problem, but if that doesn’t fix it, you’ve got to work backwards from the injector until you find the fault. Bear in mind that if the injector itself is at fault, the other three injectors might be ready to go out in sympathy. Modern common-rail engines can be hard on injectors and they sometimes need replacing before they’ve done 100,000km.
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