Is there a way to clear obdc codes in Chrysler PT cruisers without a scan tool?

Yes, you can clear OBD-II codes in a Chrysler PT Cruiser without a scan tool by disconnecting the vehicle's battery. To do this, remove the negative battery terminal and leave it disconnected for about 15 minutes. Reconnect the terminal afterward, and this should reset the engine control module and erase the trouble codes. However, this method may also reset other systems, such as the radio and clock settings.