Warning Lights Signal Failing Sensors in Audi Q2

As someone with a similar issue on my 2016 Audi Q3 gasoline model, I can share some relevant experience. I have moderate experience with car maintenance and repairs. The symptoms you describe match what I encountered, multiple warning lights including the oil pressure warning. The automotive sensor system was giving false readings due to a faulty connection. After running car diagnostics, my mechanic found that the temperature sensor connections were loose and corroded. The fix involved cleaning the temp sensor connectors and replacing a damaged wiring harness. Total repair cost was 95 Euro, which included labor and parts. The car sensor issues were resolved completely after this repair. Important: These warning lights should not be ignored as incorrect temperature readings can lead to engine damage. A proper diagnosis using specialized diagnostic equipment is crucial to pinpoint whether its the car sensor itself or just connection issues. To provide more specific advice for your case, could you share: Have you noticed any changes in engine performance? Are there any unusual engine noises? Does the problem occur more when the engine is cold or warm? Have you had any recent maintenance work done? This information would help determine if your issue is similar to what I experienced.

Thanks for your input. My car has 111859 KM and last service was 2 months ago. Yes, I am experiencing rough engine performance, especially when the engine is cold. The oil sensor warnings typically appear after about 10 minutes of driving. Had my mechanic check basic readings and the oil temperature seems to fluctuate abnormally. The engine temperature gauge also shows inconsistent readings. After checking through the service manual and running initial diagnostics, it looks like the oil sensor unit might need replacement rather than just cleaning. The repair shop quoted 320 Euro for parts and labor. Seems high but I understand these car sensor units are complex and require precise calibration. Would really appreciate hearing if anyone thinks this quote is reasonable or suggests getting a second opinion. Not sure if I should try the simpler fix of cleaning connections first.

I wanted to follow up on my previous response about the sensor issues. After seeing your mileage and symptoms, I am even more convinced our issues are similar. When my Audi hit 100000 KM, I also experienced those fluctuating temperature readings and oil sensor warnings. The 320 Euro quote actually sounds reasonable for a complete sensor replacement. While my initial fix with cleaning worked temporarily, I eventually needed a full oil temperature sensor replacement six months later, which cost 290 Euro. The lower cost fix was ultimately a waste of time and money. The inconsistent engine temperature readings combined with rough cold starts strongly point to a failing sensor unit. These symptoms match exactly what I dealt with before replacing my engine sensor. The computer relies on accurate temperature data to optimize engine performance, especially during cold starts. Important update from my experience: Make sure they check the entire sensor wiring harness during replacement. My mechanic found additional wear in the surrounding wiring that could have caused future issues. The car diagnostics also showed that waiting too long with faulty sensors can affect other engine management systems, so addressing it sooner rather than later is wise.

Thanks everyone for the detailed responses. After hearing about these similar experiences, I've decided to go ahead with the complete sensor replacement rather than risk temporary fixes. The 320 Euro quote seems fair given the parts and labor involved, and I don't want to risk further engine damage from incorrect temperature readings. The symptoms match too closely with what others described, especially the cold start issues and fluctuating oil temperature readings. Since my engine temperature gauge is already showing inconsistent readings, waiting longer could lead to bigger problems. I'll make sure to have them inspect the wiring harness during the repair as suggested. Will schedule the work for next week and have them do a complete diagnostic check while they're at it. Better to address these engine sensor issues now than deal with more expensive repairs later. Really helpful to hear from others who went through similar situations with their cars. Will update once the repair is complete in case anyone else runs into similar symptoms in the future.