I took my car to the mechanic to run my codes for me. He said there were two erroneous codes and cleared them. When I picked up my car after hours I took it to the carwash. Cleaned the engine bay while the engine was still running and got back in to the car. I noticed the airbag light did not go out. I called them the next day and they said that whatever they did cannot generate a code; The system must generate it by itself. The car is 131,400 hours old and for the 1 hour that they had it the light comes on go figure. Any advice?