Have a professional reset the on-board diagnostics computer If you just don't want to fix your car, and you don't want to deal with the complications of a hard reset, you can have someone with a Check Engine Light Code Reader reset the tripped code.
Do a hard reset If you don't want to try either of the above options, you can reset your check engine light the hard way. Disconnect the car battery
. The on-board diagnostics require some power to save the memory of the fault codes it's picking up to trigger the check engine light. Leave the lights on and press the horn for several minutes to drain the last bit of electricity. The downside of this method is that you will lose all the data from the computer. Also, your check engine light is likely to come on again once the computer comes across the problem that tripped the check engine light in the first place
