Conditions for Setting the DTC
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P206B
The reductant control module detects a performance fault on the reductant quality sensor for greater than 5 min.
P206C
The reductant control module detects that the reductant quality sensor signal is out of range low for greater than 5 s.
P206D
The reductant control module detects that the reductant quality sensor signal is out of range high for greater than 5 s.