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2013 Volkswagen Passat - CEL Question

My Check motor light comes on intermittently. Diagnostic indicated Failed Booster Pressure Sensor. Can I continue driving safely? Replacement estimate $689

The booster pressure if your brake booster so it may be a concern.

No, you can’t. Booster problems mean BRAKE problems. Going is optional, stopping is not.

The boost pressure sensor detects the turbocharger boost and the computer makes adjustments to the timing and fuel/air mixture from the boost pressure detected.

You can drive the vehicle, but the computer might turn off the turbo boost and the engine will lack power under acceleration.

The boost pressure sensor is located on the air intake/intercooler.

Sometimes it can be removed and cleaned with MAF sensor cleaner to get it working again. Or, it needs to be replaced.