i recently did a clutch and flywheel job on my a6. put it all together, started her up and ran fine. hopped on the freeway and my check light came on. checked the ecu for any codes. none. only seems to come on when i drive for more than 20 mins. anyone know what else i should check?

 

does the CEL come on and STAY on when u are driving?

 

no the cel blinks once when i turn on the car.