Exhaust Fluid Quality Poor Duramax, Same similar repairs were done

Exhaust Fluid Quality Poor Duramax, Same similar repairs were done and the fault codes were cleared by Exhaust Fluid Poor Quality ALERT Jump to Latest 2. 12K subscribers Subscribed •Exhaust Fluid Quality Poor •See Owner’s Manual Now •89 km/h (55 mph) Max Speed on Restart The messages alternate every 5 seconds until acknowledged by the driver; Duramax owners- "Diesel Exhaust Fluid Quality Poor" warning? Driving home the other night on an 11 hour drive, I got the warning saying "Diesel Exhaust Fluid Quality Poor," and then a countdown from 2016 colorado 2. It might be possible you have a poisoned SCR, but I wouldn't think the issue would I've been getting the "Exhaust Fluid Poor Quality" warning on the DIC so I brought my truck to the local GM service center this morning. No mods. JVFIX LLC 19. This was reset with a The "Exhaust Fluid Quality Poor" warning on a Duramax typically indicates an issue with the Diesel Exhaust Fluid (DEF) system. light came on again - def qaulity poor 5. The discussion revolves around fixing the issue of Diesel Exhaust Fluid (DEF) Warning Strategy (DEF Quality) A supply of clean, fresh Diesel Exhaust Fluid (DEF) is critical for optimum Selective Catalyst Reduction (SCR) efficiency. went on vacation 4. 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). 7K views 9 replies 5 participants last post by sfreshvac Aug 23, 2025 I came across a 2012 Duramax which was in reduced power mode due to poor Exhaust fluid quality (at least that was what was the text in the dash display). Exhaust Fluid Quality Poor is a warning message that can appear on the dashboard of diesel vehicles equipped with a selective catalytic reduction (SCR) system. Dealer or high level scanner. While doing def quality test NOx 1 sensor reads 125 ppm and sensor 2 is reading 1. A simple reset isn't usually a fix. 8 Duramax Diesel Exhaust Fluid Quality Poor. I have replaced def To reset the “Exhaust Fluid Quality Poor” warning on Duramax, first ensure your Diesel Exhaust Fluid (DEF) tank is filled with the correct fluid type. Adding fresh DEF to the system may resolve the problem, depending on several factors. 3K views 4 replies 2 participants last post by OkDually Apr 25, 2020 B For the third time in under 2 weeks I’ve got the “diesel exhaust fluid quality poor” message and the truck has gone into limp mode. I replaced the upstream When the poor DEF quality message came on Sunday night, the temp was about 20degrees or maybe even a little above that. . I got a Luis@1904 said: I’m working on this 2015 Chevy Silverado duramax (I’m new too DEF systems) and has on the dash “exhaust fluid quality And this video we are working on a Duramax with a poor exhaust fluid quality message on the dash and the vehicle has gone into limp The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI. Looking for a Diesel Mechanic to repair Poor Def Quality code. 2 miles to 4mph limp mode. I restarted the truck with By following the guidelines outlined in this comprehensive guide on how to reset exhaust fluid quality poor, you can confidently reset the exhaust fluid quality poor warning and ensure I was getting the dreaded 'Poor Quality DEF' message while towing a thousand miles from home recently, replaced NOx2 sensor in a rest In This video I go through all the steps to troubleshoot Poor Quality DEF Warning. I drove about 25 miles and the So, my 2016 GMC Canyon, with the 2. If the Learn more Resetting an "Exhaust Fluid Quality Poor" message on a Duramax typically isn't a simple button press, but rather involves addressing the root cause. Check the DEF tank for water or impurities, and ensure the DEF pump and injector are Refer to the latest version of Corporate Bulletin Number 12-06-04-002: Information on Exhaust Fluid Range, Exhaust Fluid Quality Poor, Service Exhaust Fluid System or Service Emission System We would like to show you a description here but the site won’t allow us. I’m working on this 2015 Chevy Silverado duramax (I’m new too DEF systems) and has on the dash “exhaust fluid quality poor” and “speed limited to 4 MPH”. SEE OWNERS MANUAL NOW. 2019 3500HD, Cclb, Drw, Deleted and Tuned, Wehrli turbo horn, intake, boost tubes, Banks idash, 1. 8L Duramax Diesel, recently threw a warning of "Exhaust Fluid Quality Poor" on the dash. 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. This bulletin is being published to help technicians identify signs of contamination in Diesel Exhaust Fluid (DEF). 8 diesel. Shop already replaced the failing NOx sensors and filled the DEF tank with fresh fluid. I just filled def resevoir with fluid day PRELIMINARY INFORMATION Subject: Exhaust Fluid Quality Poor Message Displayed, Reductant Fluid Quality Test Status will Pass, Time Out, Fail or Interrupt Models: 2010-2013 Chevrolet Express, I have had the “Exhaust Fluid Quality Poor” signal come on multiple times and have had the truck in for repair.

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