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EGR valve defective (exhaust gas recirculation)
Exhaust gas recirculation reduces pollutants by cooling combustion.
Costs
Every car issue can be caused by different things. Here are the most common ones
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Most Expensive
Most Expensive
Moderate costs
Moderate costs
Moderate costs
Cheapest case
Cheapest case
Discussions
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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 damage
- Failure of the exhaust emission test (Failure to pass the exhaust emission test)
Function of EGR system
The engine control unit is the heart of modern engines. It controls injection and, in gasoline engines, ignition. It uses sensor signals and parameters to provide precise engine control. Injection valves or injectors, solenoid or piezo injectors, ensure an exact injection quantity.
Due to low manufacturing tolerances, injectors have different resistance values and "characteristics". For this reason, each injector is marked with a combination of numbers and letters that must be taught in when the injector is changed. This is done to compensate for manufacturing tolerances (quantity drift compensations). This ensures clean and smooth engine running.