AdBlue pressure too low
Monitors nitrogen oxide system effectiveness.
Costs
Every car issue can be caused by different things. Here are the most common ones
max.
Potential Causes
- Spare parts
- Work time
max.
Potential Causes
- Spare parts
- Work time
max.
Potential Causes
- Spare parts
- Work time
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Attention! Critical error!
With this issue, it frequently occurs that the vehicle cannot be started anymore due to an empty Ad-Blue tank.
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Details
Probability
Based on the values and symptoms you have entered, a crude estimation of the probability of this problem can be made
HIGH
Typical consequences
If this defect is detected, it may lead to the following problems:
- Engine start not possible
- Failure of the exhaust emission test (Failure to pass the exhaust emission test)
Function of the Ad-Blue system
Ad-Blue is a mixture of 32.5% synthetic urea and 67.5% demineralized water. It is used in modern diesel vehicles to reduce nitrogen emissions. Stored in a separate tank, Ad-Blue is injected into the exhaust system, where it produces ammonia through heat.
This reacts with the nitrogen oxides in the exhaust gas and is converted into harmless nitrogen and water vapor in the SCR catalytic converter, enabling emissions to be reduced by up to 90%. As a rule, a warning message appears in the on-board computer when a remaining mileage of 2400 KM is reached. If the tank is empty, after several warnings have been displayed, the vehicle can no longer start.