This almost for sure. Especially since you had just pulled it apart. Did you pull and re-install the sensor or leave it in the whole time? Easy enough to pull and take a look at it.
2003 White RS6 2013 Midnight Blue S5
2013 Daytona RS5 2x944 Turbo's 1974 911 w/'91 3.6ltr motor
Roy, WA