SCR Diagnostics with Tailpipe Analysis
NOx sensors on vehicles have 100% crosstalk with NH3 (Ammonia). When NH3 doesn't get reacted in the SCR it is sensed by the rear NOx sensor, complicating SCR diagnostics. Measuring true NOx out the tailpipe can really shorten diagnostic times. This is the theory of that diagnostic process.
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![[EN] How to check a NOx sensor | Masters of Motion](https://i.ytimg.com/vi/Q5cc3r4ADEQ/hqdefault.jpg?sqp=-oaymwEjCNACELwBSFryq4qpAxUIARUAAAAAGAElAADIQj0AgKJDeAE=&rs=AOn4CLCzSuUgMT0AT8o0xo1CAn0pu_aprQ)
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[EN] How to check a NOx sensor | Masters of Motion
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