Before replacing a part diagnostic's for code P0140 need to be done . May not be a part , could be wiring , PCM etc....
https://www.obd-codes.com/p0140
SOURCE: cabin air filter? 2001 buick lesabre
Absolutely the light is not on because of that its on from something else/has something to do with the engine/Please rate my response thank you very much
SOURCE: 1989 lesabre engine codes
26 is a quad driver failure, 41 is a cam sensor failure. I can give you a test procedure for 26 but for 41 you likely need to replace the magnet that is in the cam gear for the cam sensor pick-up.
SOURCE: engine light blinking
You may have a bad spark plug wire or plug, if that doesnt solve the problem it could be the ignition coil.
SOURCE: How do I reset my Check Engine Light?
you could go to an auto parts store and they can reset it for you, or you could pull your battery cables off the battery and hold them together for about 10 sec. that will clear any codes.
SOURCE: check engine light is on, diagnostic code p0140
I had this problem with my 05 Trailblazer and it happened around 50k miles. The oxygen sensor needs to be replaced and the part costs about 90 bucks but atleast you will have you're check engine light off.
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