hi all, Had this light come up two weeks ago. Went into the shop and changed dosage valve. The mechanic also questioned the pump but after .
getting the SCR performance Low alarm on my dash followed by ‘Engine will derate to 8Kph’ . The power cuts in half. Have taken truck to two .
Volvo – Derate temporary fix for SCR low performance – IMPORTANT and useful. youtube.com. Volvo Vnl Semi Truck stranded 5 mph derate limit temp fix scr low .
If this started after starting the truck, it could be from low air tanks. Cycle the key 3 times and see if it will clear if it is for that reason. Otherwise .
Scr performance low keeps coming on and have to do a parked … It did not do it for like 3500 miles now it is doing it again 2013 mack cxu613.
The Mack ClearTech SCR System works by directly injecting DEF into the engine’s hot exhaust gas stream to reduce NOx emissions to a near zero amount. … The amount of DEF injected into the exhaust is monitored by NOx sensors and regulated by the Aftertreatment Control Module (ACM).
I got the dreaded Check Engine light and a message of SCR Performance Low, Engine in Derate, 5 MPH limit in 150 Min. I stopped and .
It will continue to regen until the to soot level has reached ‘low’ or ‘0%. … This method is used on Volvo’s, Mack’s, Detroit diesel, and other manufacturers as well. A service forced regeneration will ensure that the DPF / SCR .
US10 Catalyzed SCR System Performance. Mack and Volvo. US10 11L, 13L, 16L, SNM 13-022 and SNV … SPN 100 / FMI 1 and P052400 Low Oil Pressure .