How to Remove the Urea Fault Torque Limitation?
3 Answers
There are 4 methods to remove the urea fault torque limitation: 1. Check if the urea nozzle is clogged: If the vehicle uses urea with too high concentration, it may cause urea crystallization to block the urea nozzle. The urea nozzle can be removed and cleaned; 2. Check if the heating pipe is damaged: The heating pipe can prevent urea from crystallizing at low temperatures. Therefore, damage to the heating pipe may cause crystallization inside the vehicle's urea storage tank, preventing the nozzle from spraying; 3. Check if the relay is aged or failed: The relay controls the operation of the urea system. If the vehicle is older with high mileage, the relay is likely to be damaged; 4. Detect the fault through A60 station: Check a series of issues with the heating pipe, inspect the plug, and then read the fault code.
Last time I encountered a urea system fault with torque limitation, I checked the urea level myself and found it was indeed empty. I added some original urea solution, but surprisingly the torque limitation wasn’t lifted. So I used the onboard computer to check the fault code, which indicated a clogged nozzle. I quickly went to a repair shop recommended by a friend. The technician cleaned the nozzle and restarted the system, and the issue was resolved immediately. Now, I check the urea level and system status every three months, topping up in advance to avoid running empty. If such faults aren’t addressed promptly, the vehicle will feel sluggish and may even cause engine damage—definitely not worth the risk. The lesson is: don’t wait for the warning light to act; regular maintenance keeps your car running smoothly on long trips.
A buddy once asked me what to do if his diesel truck went into limp mode. I told him first check if there's enough fluid in the DEF tank - if not, top it up with high-quality urea solution. If that doesn't fix it, inspect the fluid quality - make sure there's no water contamination or too many impurities. If you still can't solve it, don't force the vehicle to run - find a reputable repair shop. I've seen a friend waste money fixing electrical systems after struggling with it himself. This limp mode feature protects the engine from more serious damage, but it's really inconvenient. Remind him not to penny-pinch on small things that could lead to bigger problems - regular DEF system maintenance can save a lot of headaches.
