service engine soon


Asked by Apr 27, 2016 at 09:43 PM about the 1994 Buick Roadmaster Limited Sedan RWD

Question type: Maintenance & Repair

obd 1 code reader code12 thennothing

4 Answers


Code 12 means everything is fine and working.


why can't I get the service engine soon to go off ?

2 of 2 people found this helpful.

12 ERROR CODE DIAGNOSTIC SYSTEM FUNCTIONING CORRECTLY..... Try resetting it by taking the neg. batter cable off for 15 min to 30 min.

1 of 1 people found this helpful.

it has been my experience that if there is a weird electrical issue with a car it is often a ground problem. check not only your battery cables, both ends clean and tight, but any ground you can find. also, check the connection to the computer itself. sometimes corrosion in there can cause problems. 2 of my 5 vehicles are obd1, pain in the A** to diagnose.

3 of 3 people found this helpful.

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