Exhaust Fluid Quality Poor Duramax, Dtc p205B and P0677 dtc. LAUNCH scan tool Ern Dog 69 subscribers Subscribed Customer: I have a 2011 3500 hd duramax and the poor quality exhaust fluid light came on,, now the def light and the engine light came on, I put GM fluid it it and it has never been run low, how do I resolve Reductant tank heater 1 is a common failure causing vehicle to enter limp mode, requiring DEF tank reservoir replacement. When you're driving and take your foot Chevy Duramax Reductant Fluid Quality Poor Warning Won't Clear Fixing Cars With 15th St Automotive 11. Running a Reductant (some say Exhaust) Fluid Quality Test (RFQT or EFQT) appeared to be the solution. I have an 2012 Duramax w/ exhaust fluid quality poor Need your input everyone. took it to a dealer in DEF quality poor is related to the SCR, DEF injection system, NOX1 (sensor), and NOX2 (sensor). A dealer may encounter customer concerns of the driver information center (DIC) showing messages The most common solution to "exhaust fluid poor quality" is replacement of NOx sensors (sometimes 2 sometimes one). Since I already had it, I replaced the downstream NOX sensor. The diesel quality in México is so poor and I got the message "cleaning exhaust filter - keep driving" but Circuit/System Description The selective catalytic reduction (SCR) system reduces oxides of nitrogen (NOx) emissions by injecting a metered amount of diesel exhaust fluid (DEF) or This 2014 Chevy Cruze Diesel is fussing about the DEF (Diesel Exhaust Fluid) Quality and is counting down the miles until it becomes a BEACHED WHALE!Owner sa My 2013 3500HD has the dreaded "Exhaust Fluid Quality Poor" message and the DEF light. light came on def quality poor - dealer indicated it was an egr issue 2.

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