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It is possible to repair the 1992 deville check engine light if it is malfunctioning.
how to reset check engine light on 1992 Mazda mpv
There are pages and pages of things that can cause a check engine light. You need to have it checked with a scantool. Then the code can be diagnosed and repaired.
why would u want the check engine light to come on. when its off it means ur engine is running fine. or the blub is pop
The check engine light comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, a check engine light is lit when there is a problem in the emissions or somthing that is affecting the effectiveness of the emissions. If the check engine light is flashing a misfire has been detected
The Check Engine Light comes on when the ECU detects a problem with the emissions system.
With a scan toolWith a scan tool
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The check engine light on a 1992 BMW 735i will come on intermittently if a problem exists but the vehicle's computer is not constantly receiving faulty readings. This can occur from a loose connection, bad sensor, or failing component.
See link below.
Check engine codes on Honda vehicles such as a 1992 Honda Civic have to be manually reset. To do so, remove the ECU fuse located inside the engine bay.
Have vehicle scanned to determine the problem