Volvo Group, the global umbrella company of Volvo Trucks North America, announced Thursday it is setting aside $778 million to address instances of degradation of its emissions control components on heavy-duty truck engines. The degradation could put the engines out of compliance with emissions standards in Europe and the U.S. Volvo announced the discovery of the degradation issue in October, saying then that it likely affects engines for both the North American and European markets. The affected component is part of the exhaust aftertreatment system, also known as the selective catalytic reduction (SCR) system. These systems were implemented in nearly all Class 8 truck engines in the U.S. to meet 2010 emissions standards and have been in use ever since. The company is still in the early stages of remedying the issue, said Claes Eliasson, head of media relations for the Volvo Group. The $778 million charge, taken in 2018’s fourth quarter, is “the calculated costs for Volvo Group for this issue,” he said. Specifics as to the company’s plan for repairs or potential recalls, as well as what truck models are affected, are still being fleshed out, Eliasson said. “When it comes to remedies, we are still looking at options,” he said, adding the company is “engaged in dialogue with relevant authorities.” “It’s too soon to say what it will look like,” he said. The $778 million figure is based on vehicle testing and “statistical analysis and dialogue with relevant authorities,” Volvo said in a press release on Thursday. The company also noted that the emissions component degradation issue does not affect engine performance nor is it a safety issue. Also, the company said, the engines met emissions standards when they were built. Cummins last July announced it had uncovered a similar component degradation issue within its SCR systems and instituted a voluntary recall of roughly 500,000 model-year 2010-2015 engines. Cummins also has set aside hundreds of millions of dollars for a repair campaign, according to financial filings.
The number one cause of a 5 MPH derate in a Volvo truck is the SCR/DEF system not operating properly. The SCR/DEF system was implemented in Volvo Trucks 2011+ to curb exhaust emissions on Class 8 trucks. If you have a Paccar engine and are stuck in 5 MPH derate check out this blog post. What is a derate? A derate means that the program inside the engine computer limits either the power or vehicle speed. A derate is designed to protect you from causing engine or DPF damage. A derate can be caused by various sensors or system. However, when it’s a specific 5 MPH derate then you can be certain that the problem is related to the emissions, aka the aftertreatment system. What components make up the emission system that control the 5 MPH derate?
The dreaded fault code that causes the 5 MPH derate! This fault is related to the “SCR Inducement” which is what regulates your truck to this derate. 2011-2013 EPA10 Trucks
2014-2019 GHG14, GHG17 Trucks
How to temporarily override this 5 MPH derate on a Volvo? Some Volvos will allow you to temporarily override the derate if you unplug the speed sensor on the transmission. This sensor is either located at the tail shaft of the transmission or if it’s an I-Shift on the right side of the rear transmission. This will eliminate your vehicle speed from displaying on the dashboard once disconnected. This will also limit your RPM to ~1400 RPM so you won’t have full power and you will have to change your gears manually because the transmission won’t know the speed. We do not endorse this method, but it’s good to know in case of an emergency. Beware some trucks, even if disconnected, will not go over 5 MPH – it is programmed even if the speed sensor is disconnected, so this method may not work all the time. How to fix this 5 MPH derate? You need to see what caused the “SCR Inducement Code” to come up in the first place. A failed component is usually what triggers this code. Common Failures
Can you do updates to the emission system? The short answer is yes, updates are recommended if they are available. It’s recommended to see if you have any updates available and to do them if so because this can remove any bugs or issues. However, please note that this isn’t a fix for all your problems or ghost codes, but it’s good practice to have the latest updates. We hope you find this blog post useful! Until next time! 👋 |
How to fix scr system fault volvo
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