OBD2 (a.k.a., OBDII, OBD II ) devices can be used to monitor the Volt's operation, clear codes, reduce insurance costs and....cause problems.
Insurance Company Dongles
Will plugging the device into my Volt cause problems?
Workarounds for OBD2 Problems
GM Policy on OBD2 Devices
GM OBD2 Details...
Is anyone participating in the Progressive, or Allstate Drive Wise insurance programs that utilize the OBDII port to track driving habits and get up to 30% insurance discount? I was told by my Allstate rep that the Volt is not eligible for the Drive Wise discount . I checked with my Volt adviser...