What does poor quality exhaust fluid warning light mean?

Well, driving home today on the interstate from my weekly trip to the airport, I got the “Poor Quality Exhaust Fluid” warning light. Prior to this I have never gotten any kind of warnings or messages.

When to use def quality warning level 1?

The series of DEF Quality Warnings alert the driver that DEF system service is urgently needed. Warning Level 1 is triggered when the ECM first detects the SCR efficiency is below a calibrated value. The Driver Information Center (DIC) displays the following messages: The messages remain on the DIC until acknowledged by the driver.

What kind of exhaust fluid does a Duramax use?

I have a 2011 HD2500 duramax with poor exhaust fluid light on. Third trip to Dealer knock sensors and sensors. Not fixed yet 2011 3500 srw. Poor quality def. took to dealer. Said nozzle was clogged drained tank new fluid. Next day light on again. Back to dealer. New tank new pump new wiring harness. 4 days later light back on again Getting tired

Why did I not get a low Def warning?

Still doesn’t answer the question of WHY you didn’t get any other Pre-Warnings ! Heat is DEF’s enemy not cold… It sits in a heated garage every night so I don’t think cold is affecting it really. Low DEF warning is one thing, but the DEF quality thing has me stymied, especially since its the same DEF that has worked for the 1st 4200 miles.

What does the exhaust fluid quality poor message mean?

An Exhaust Fluid Quality Poor message can be displayed with no DTCs. The Exhaust Fluid Quality Poor DIC message notifies the customer that the ECM has detected a drop in the SCR NOx reduction efficiency. This PI is to assist with vehicles that have difficulty completing the Reductant Fluid Quality Test

What does low DEF Diesel Exhaust Fluid mean?

So Friday I had the “Diesel Exhaust Fluid Quality Poor Message” pop up on the dash with a 100 mile warning. I restarted the truck with no warning. I drove about 25 miles and the “Low DEF” message came on.

What are the DIC messages for diesel exhaust fluid?

2012-2015 Diesel Exhaust Fluid (DEF) DIC Messages: Service Exhaust Fluid System (Tamper): This message displays when a DTC sets related to the DEF system that is interpreted as tampering with the system. A detailed warning strategy is explained in SI Document 2595030.

What does Pip mean for diesel exhaust fluid?

This PI is to assist with vehicles that have difficulty completing the DEF (diesel exhaust fluid) quality test and/or clearing the Exhaust Fluid Quality Poor Message. Complete the current SI diagnostic for any trouble codes or symptoms found.