Technical Service Bulletins

TDI Can’t Breathe?

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TDI Can’t Breathe?

 If you receive a complaint of low power with a Volkswagen TDI engine, check the mass airflow (MAF) sensor reading in measuring block group 00, field 10.

The value should reach 255 under full load.

If the reading is low, check the air filter and air box for restrictions. If OK, suspect a faulty MAF sensor.

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