Disconnect battery to reset faults
Or...
To reset Serious faults such as this thread.....
Disconnect battery, Short terminals in Diagnostic socket.
TC to E1 (Old Trucks)
TC to E12 (New trucks)
Connect Battery, Turn on ignition, Press Accelerator 5 times, Start engine
Light should go out.
This is ONLY to be used to report flooding, spam, advertising and problematic (harassing, abusive or crude) posts.