1997 Oldsmobile Cutlass Supreme Q&A
1997 Oldsmobile Cutlass Supreme Question: How can I reset the "Service Engine Soon Light"
How can I reset the "Service Engine Soon" light ? I disconnected the Air Flow Sensors and started the car several times while I was working on it. The repairs are finished and the "Sensors" have been reconnected. However, the "Service Engine Soon" light stays on after the car is started. - garageman
after it passes its internal tests 3 times, it will reset itself. if it persistes, then there is a problem. it could take up to a few days before it will clear. you can try removing the negative cable for about 10 seconds but that may or may not clear the code. Roy - mastertech6371
I have 1997 Dodge Grand Caravan. I have had the engine tune up, changed the upper sensor, egr valve still service engine soon light stays on - Visitor
turn the key on without starting,press the excelerator all the way to the floor 3 times.the light should go off. - Visitor