Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
I have a 2016 Ram 5500 with a Cummins 6.7. Pulled a code for a NOX sensor “A” circuit out of range. Test procedure is to unplug sensor at its module and measure voltage from signal wire to ground. If readings are within 1 volt of source voltage, then replace sensor “A”. Simple test, I will admit however, I have had similar codes on 3 other sim8lar trucks in the last year, and have replaced 2 already at $500 a pop! There is a core on these sensors, which I assume is to refurbish or recycle.
My question is this. Is there an effective way to clean the sensor, assuming it’s not a circuit board problem, and reuse the part or am I destined to bear the $500 cost every time these codes pop up? If cleaning the carbon from the sensor works, then I will make it part of a PM service as all of the trucks seem to have theses codes pop up around 100-150k miles.
Has anyone tried cleaning and reinstall? Does it work? What procedure and product do you use to clean? Love the trucks, tired of the constant emission issues!
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