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Fuel tank ventilation system leak
Fuel tank vent valve ensures proper fuel system operation.
Costs
Every car issue can be caused by different things. Here are the most common ones
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Most Expensive
Moderate costs
Moderate costs
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:
- Failure of the exhaust emission test (Failure to pass the exhaust emission test)
Function of tank ventilation
The Tank Leakage Diagnostic Module (DMTL) monitors fuel gases and detects leaks in the system. An air pump is used to create a vacuum while the DMTL valve is closed. An internal tank pressure sensor serves as a reference value. If everything is intact, the vacuum remains stable.
A lack of vacuum indicates a leak, whereupon the engine control light flashes. Internal testing is performed periodically to prevent unfiltered fuel leaks and environmental damage. DMTL ensures that fuel vapors are safely exhausted or fed to combustion instead of being released into the environment. This ensures environmental protection and prevents fuel leakage.