Not sure what you are asking, but mine has come on sometimes too. It records the reason for the light in the computer, which is read with a special plug in reader under the dash. The mechanic can then look up the codes for cause and diagnosis.
Generally from my customer experience (not a mechanic), if it stays on and does not reset itself, take it in for diagnosis. This is especially true if it starts flashing. Mine were a series of ignition coil failures, that reset a couple of times and the the part failed for good (no power and risk of further damage). The coils are a pain because they are $100 + each, and 3 of 6 are located under the back of the engine under the spark plugs and are not self serviceable.
If one fails in the backside, be sure to change the plugs (and any newer coils from the front), cause it's a 2-3 hour job to get at them.
p0431 code
how to reset check engine light on 1992 Mazda mpv
A yellow flashing engine light is an indication that the engine should be checked. The yellow flashing light can because by low water level or low motor oil.
size spare tire mazda 2003 mpv van.
Can a Mazda 626 engine fit in a Mazda MPV mini van?
Have vehicle scanned to determine the problem
need to replace all my spark plugs on my Mazda mpv 2003 please help me.
It will fit a 2003 Mazda MPV with a 3.0L engine.
Burned out sending unit
JKack up the horn and put a new car under it
top left side of dash board, two relays
No it is a non-interference engine