2016 Audi A6 Quattro
Mileage
94,605
Service Date
3/13/2023
Services Performed
- Scanned all vehicle systems for faults and found a code stored in the engine module. p0391 Cam position sensor B bank 2 range performance. We checked the values of the cam positions and found the affected cam is on a default value of 0 degrees. We erased the code and it came back immediately. We disconnected the tank to access bank 2 exhaust cam sensor and used an oscilloscope to test its function and found no square wave signal. We compared it to bank 2 intake cam sensor and found a proper signal. We also noticed that bank 2 intake cam sensor looks new. We suspect someone installed a new sensor on the wrong cam. We moved the new sensor to bank 2 exhaust, found an old sensor in the console and installed it into bank 2 intake cam and found the issue is resolved. Erased all codes and checked cam position values – OK.
- Low quality blade frame is bent. Replace with new.
- We had one technician operate the brake pedal while the second pinched flexible brake hoses. We identified that the issue resided in the right front caliper. We removed the wheel and visually inspected the caliper and found that the spring was installed incorrectly and was preventing the caliper from slide compensating. We corrected the issue and reinstalled the wheel and found the brake pedal is operating normally.
Per N. gave our service a 5 star review on 3/14/2023
