Nissan Altima- Regarding the "Service Engine Soon" light- what are the odds that my gas cap is not tightening like it should? Just replace to find out?

Asked by Nov 18, 2016 at 03:25 PM about the 2009 Nissan Altima 2.5 S

Question type: Maintenance & Repair

4 Answers

20

I had a nissan altima for ten years. check engine light finally went out after replacing cam and crank sensors, and most important primary catalytic converter. The reason for the catalytic converter is because once it goes out usually around 140,000 miles the baffles are sucked into the engine, because of the design of the engine. I replaced mine before it would destroy the engine.

Best Answer
89,685

That "Service Engine Soon" light" has nothing to do with the cap, that's is for things like an oil change and other maintenance the car may need!

1 out of 1 people think this is helpful.

Actually the manual states clearly that if the cap is loose...then the "Service Engine Light" will come on but eventually fade when the cap has been tightened.

58,965

The best thing to do is have the computer scanned for trouble codes. Most auto parts stores will do it for free. Post the code(s) and we can help further. No sense in guessing and throwing parts (and money) at it. There's actually over 100 things that can trigger the service engine soon light. The gas cap is only one of them! HTH. -Jim

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