I had a similar problem with my 2003 PT Cruiser after pulling and replacing some fuses while the engine was running. The engine light came on for a day and then went out on its own. When I attempted to get it CA emission tested for registration it failed the OBD test. When I checked with my scanner, I got 2 codes, a P1681 and a P0441. I did a reset and when tested again I got the same two codes while the engine light remained off. After online research, I found instructions to disconnect the battery for a few minutes to reset all of the onboard computers. I did so for about 15 minutes and reconnected; re-scanned and found the codes clear.
Thursday, October 16th, 2014 AT 8:52 PM