How to diagnose AdBlue fault?
If you notice the adblue warning light or symbol appearing on your dashboard, it’s a sign that something is wrong with the scr system. Various issues can trigger this warning, ranging from low levels to more serious malfunctions. The first sign of a low adblue level will likely be a warning light on your dashboard. The light’s colour usually indicates the amount of urgency to refill your vehicle.It’s impossible to drive without AdBlue® – your engine will not start, and you’ll see a notification noting ‘AdBlue® is empty’. A notification will also appear when your AdBlue® tank is running low. Most diesel vehicles require an AdBlue® top-up every 3,000-4,000 miles, depending on the engine.The AdBlue light in your car may resemble a liquid being poured from a container. Look out for this AdBlue warning light. If you see the AdBlue warning light, this means you have about 1,500 miles of fluid left. You should look to fill up your tank as soon as possible to avoid it running out.
Are AdBlue faults common?
One of the most frequent issues with AdBlue is crystallization. When exposed to air or not properly managed, AdBlue can crystallize, leading to clogged injectors and filters. This blockage can cause the system to malfunction, leading to increased emissions and potential engine damage. The AdBlue system does not affect the running or performance of the engine itself, it purely exists for emissions control reasons. We can repair, replace or remove your vehicle’s AdBlue system at a fraction of the cost of main dealer prices. Main dealers often have big delays for parts, which mostly don’t affect us.Reduced Engine Performance A faulty AdBlue® system can impact your engine’s performance. You might notice reduced power or poor fuel efficiency, especially under heavy loads. This happens because the SCR system isn’t effectively controlling emissions, which can affect the engine’s overall efficiency.The findings suggest that inconsistent Adblue composition may reduce emissions reduction effectiveness and potential engine performance issues. Based on the available research, it is generally recommended to avoid mixing Adblue brands to ensure optimal performance and emissions compliance.AdBlue Crystallization AdBlue is primarily made of urea and water, and it can crystallize over time, leading to blockages in the injection system. If this happens, your car may not be able to properly inject AdBlue into the exhaust, causing performance issues and triggering warning lights.
What is the fault code for AdBlue?
Some common fault codes related to AdBlue include P20EE, P205C, and P20B9. P20EE indicates a malfunction in the AdBlue system, specifically a low exhaust gas sensor; P205C indicates an AdBlue fluid quality issue; and P20B9 indicates a low AdBlue line pressure. If the sensor fails, it can result in incorrect readings, causing the AdBlue system to malfunction.
What is an AdBlue reset?
AdBlue Reset is an essential diagnostic function designed for modern diesel vehicles equipped with Selective Catalytic Reduction (SCR) systems. It allows users to reset the AdBlue system after refilling or servicing, and is critical to remove warnings such as Engine will not restart in xxx miles. Driving without AdBlue® or diesel exhaust fluid (DEF) in your vehicle’s dedicated tank is theoretically not possible. In fact, if your AdBlue® tank is empty, your diesel vehicle’s engine will simply stop and won’t be able to restart until you top it up.AdBlue Off refers to the process of deactivating the AdBlue system in a vehicle. This can be achieved through software modifications, such as ECU remapping, or by physically removing the system’s components from the engine.If you run out of AdBlue, your diesel vehicle will not be able to start or continue driving for long. AdBlue is a fluid used in diesel engines to reduce harmful emissions – so, if the AdBlue tank runs dry, the system detects this and triggers a warning on your dashboard.Manually Resetting the AdBlue Warning Light Restart the car : Simply restarting your vehicle after refilling the AdBlue tank may be enough to turn off the warning light. Perform a Driving Cycle : Sometimes, the warning light disappears after driving a certain distance or completing multiple trips.If AdBlue runs out while you’re driving, you’ll be able to continue your journey. But once you turn the engine off, it won’t start again until AdBlue is topped up. This is a built-in fail-safe by manufacturers to ensure emission standards are met. It’s inconvenient – but entirely avoidable.