Rough-Running Touareg: Drift Compensation Alert Guide

Had a similar problem on my 2019 VW Tiguan TDI. The drift compensation error typically points to fuel injection system problems, specifically with injector performance. The rough running and check engine light combination often indicates the engine management system is trying to compensate for poor fuel delivery. In my case, one injector was failing to deliver the correct amount of fuel, forcing the ECU to constantly adjust the compensation values. The airflow sensors initially seemed suspicious, but diagnostic testing revealed carbon buildup inside the injector. This is a serious issue that needs addressing soon, as continued operation can lead to increased fuel consumption, reduced engine performance, and potential damage to other components. The repair involved removing and cleaning the injectors, plus replacing one that was beyond salvage. The car sensors needed recalibration after the work to reset the compensation values. Since the fix, fuel economy improved significantly and the engine runs smoothly. Would strongly recommend getting this checked by a shop with experience in VW diesel fuel injection systems. Delaying could lead to more extensive repairs later.

Thanks for sharing that feedback about the injector issue. Your experience matches what I just found in my Touareg error log. Good to know the compensation adjustment can be resolved through proper diagnosis and cleaning. Since my symptoms sound identical, I am planning to take it in soon. Just curious, do you remember roughly what the repair cost was for your injector work and system reset? Also, have you had any related issues pop up since the fix was done? Getting this sorted quickly seems smart to avoid worse problems and keep fuel economy optimal. Always helpful to hear real experiences before choosing a repair path.

Since getting my Touareg serviced last month, the injection system has been running perfectly. The mechanic identified a faulty injector and performed a complete reset of the quantity drift compensation, which fixed the rough running issues completely. The total repair came to 515€, covering the defective injector replacement and the necessary onboard diagnostics reset procedure. Considering how much the fuel economy has improved and how smoothly the engine now runs, it was worth the investment. No related problems have occurred since the repair. The performance tuning is spot on, and the check engine light has stayed off. The compensation adjustment values are now within normal range according to the latest scan. If your symptoms match what I experienced, getting it addressed quickly will definitely save you from potential costly repairs down the line. Just make sure the shop has the proper diagnostic equipment for VW diesel systems.

Thanks for all the responses. I finally bit the bullet and took my Touareg to a certified diesel specialist last week. The experience was actually much better than expected. The technician ran extensive onboard diagnostics and confirmed the drift compensation issue. They found two partially clogged injectors affecting the fuel injection system. After a thorough cleaning and calibration, plus replacing one problematic injector, the rough running completely disappeared. Total cost came to 480€ including parts and labor. The performance tuning and system reset took about 3 hours. Money well spent considering how smoothly it runs now. Fuel economy has already improved noticeably after just a few days. Really glad I didnt wait longer, the tech showed me how the carbon buildup was starting to affect other components. No check engine light since the repair and the engine purrs like new. Lesson learned about not delaying when these warnings first appear.