Do cleared codes come back?
If your main reason for buying an inexpensive scanner is to reset the check-engine light, know this: clearing the code and turning the light off doesn’t mean your issue has gone away. It’s possible that the warning light won’t come back on after you clear the code.
What happens if you erase trouble codes?
If the DTC is just deleted, the system may not reset the DTC until a certain distance is travelled. This means the system may not be functioning correctly. Another example would be if parts were removed from a vehicle during the repair process and the DTCs were for loss of communication with those parts.
What does it mean when a computer has an intermittent fault?
An intermittent fault, often called simply an “intermittent”, is a malfunction of a device or system that occurs at intervals, usually irregular, in a device or system that functions normally at other times. Intermittent faults are common to all branches of technology, including computer software.
Why are intermittent faults not easily repeatable?
Intermittent faults are not easily repeatable because of their complicated behavioral patterns. These are also sometimes referred to as “soft” failures, since they do not manifest themselves all the time and disappear in an unpredictable manner.
What should I do if I have an intermittent fault?
Troubleshooting techniques. Some techniques to resolve intermittent faults are: Automatic logging of relevant parameters over a long enough time for the fault to manifest can help; parameter values at the time of the fault may identify the cause so that appropriate remedial action can be taken.
What happens when a fault is too frequent?
Because the timing of the malfunction is unpredictable, and both device or system downtime and engineers’ time incur cost, the fault is often simply tolerated if not too frequent unless it causes unacceptable problems or dangers.