Intermittent faults in Volkswagen Audi Group diesel engines can be challenging to diagnose due to their elusive nature. Diagnose Dan explains that faulty piezoelectric sensors within injectors can lead to incorrect injection timing and quantity adjustment. Engineers must monitor injection quantity deviations and measure solenoid injector resistance to pinpoint the issue. If resistance is out of specification, replacing the faulty injector is necessary to restore proper engine operation. Correcting the fault involves recalibrating the injector delivery and voltage values with diagnostic tools.
Why it matters for your car
Drivers need to be aware of potential issues with their diesel engines to ensure smooth and efficient vehicle performance.
Drivers investigating an engine warning light can use AutoScan for Windows with a compatible ELM327 adapter to read and clear fault codes and view live data, freeze frame and readiness information.
