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Nope, bet it was the other way around... Your speedometer stopped working and your check engine light came on. A broken speedometer (don't know what car so I can't pinpoint it) will cause a whole bunch of codes.
The check engine light only comes on for something that affects emissions
Owner's manual.
the speedometer on my 97 toyota camary stopped working and the check engine light came on why
I think you need a speed sensor
The reverse light will flash if you use the override button when the front differential is locked or if "the engine is being raced for 10 seconds or more". Additionally if your speedometer is not working and the light flashes your speedometer cable may have been disconnected.
You need to have it checked for codes to know what to diagnose.
Check the speed sensor.
Bad speed sensor.
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
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.
maybe your speed sensor is bad you will get a check engine light on the dashboard too.