Problems with the engine sensors on Audi: affected models and engines
In 9 models from Audi there are 3 documented faults with the engine sensors. The most important: clogged particulate filter or faulty pressure sensor, air mass meter (MAF sensor) failure and dirty or faulty air flow meter on the 1.9 TDI (loss of power).
Documented faults, from most to least important
Severity × frequency. Below each one, the Audi models it appears in.
In A3 II, A4 B8, Q3 I and Q5 I
In A3 I, A4 B5, A4 B6 and TT I
In A3 I, A4 B5 and A6 C5
By Audi model
Open yours to see only the faults that affect it, by engine and by year.
Engines and gearboxes involved
Frequently asked questions
What faults with the engine sensors do Audi cars have?
In 9 models from Audi there are 3 documented faults with the engine sensors. The most important: clogged particulate filter or faulty pressure sensor, air mass meter (MAF sensor) failure and dirty or faulty air flow meter on the 1.9 TDI (loss of power). Each fault has its own page with the affected years and versions, the symptoms and the repair cost.
Which Audi models have the most problems with the engine sensors?
Audi A4 B5 (2 faults), Audi A3 I (2 faults), Audi A6 C5 (1 fault) and Audi TT I (1 fault).
Which Audi engines have faults with the engine sensors?
1.8 T 20v (1 fault), 1.9 TDI (1 fault) and 2.0 TDI (1 fault).