What does service exhaust fluid system now mean?

So, yesterday, out of the blue, i go to start the truck up to check for any leaks on my airbag install, when i get the dreaded Service Exhaust Fluid System- See owners manual NOW message. Naturally none of the dealers in the area can look at it until next week.

How does Def warning work on GMC trucks?

This is per the owners manual (I couldn’t make this up). “To meet federal and state requirements, the electronic onboard warning system is designed to automatically monitor DEF quality. If poor-quality fluid is detected, the system will alert the driver.

Is the exhaust fluid in my Duramax poor?

2011 Chevrolet Duramax with a Poor Quality Exhaust Fluid message and the vehicle is limited to 55mph now. DEF fluid tank is full with Peak DEF … read more ASE Certified Master Techn… My 2011 Gmc diesel truck just got a msgs service exhaust system. What can I do? And other msgs 50 miles limited … read more

How does the def quality warning system work?

“To meet federal and state requirements, the electronic onboard warning system is designed to automatically monitor DEF quality. If poor-quality fluid is detected, the system will alert the driver. If poor-quality fluid is not replaced within 200 miles, the vehicle speed will be limited to 55 mph at the next vehicle start.

Where is the exhaust fluid low speed soon message?

The message Exhaust Fluid Low – Speed Limited Soon, is displayed on the DIC. This message is also displayed at the beginning of each ignition cycle. This message remains on the DIC until acknowledged by the driver.

What’s the max speed for exhaust fluid refill?

The Exhaust Fluid Empty Refill Now message remains on the DIC until acknowledged by the driver. The 89 km/h (55 mph) Max Speed Upon Restart message is not acknowledgeable. At the next ignition ON event, the system will advance from Warning Level 6 to Warning Level 7.

What’s the service EFs message on my Duramax?

Cleared the code and drove with just the Service EFS message on with hope it might just clear itself. Scheduled an appointment after a few days of driving and on the way to the dealership the message came up stating upon next restart limited to 55mph.

Is there a fault in the exhaust system?

Exhaust Fluid System Fault!!! Hey guys, I have a 2015 F-250 with 78k miles. 2091 Engine hrs 434 idle hrs. Yesterday i got the Exhaust Fluid System Fault message. I checked the code with an SCTX4. I went on the forums and the voicemails wad that this was a code that would often just go away.

What’s the warning light on the exhaust system?

There will also be a warning light and chime. The vehicle will be speed limited to 89 km/h (55 mph) at the next restart.If the problem is not resolved after 805 km (500 miles) of operation, speed will be limited to 7 km/h (4 mph) after the next fuel fill.Is this the first message about DEF you’ve seen displayed? Have you added DEF recently?

Can a service exhaust system go into limp mode?

Yes, but limp mode is 4mph and it seems to be related to key cycles. I not condoning it, but a lot of guys eliminate this DEF system with aftermarket exhausts and programmers. It shouldn’t go into limp mode.

What does service exhaust fluid system now mean?