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Discussion Starter #1 (Edited)
hey guys, so my corsa 1.2 has the Lean fuel trim bank 1 code (yay 🥺) i’ve ran a diagnostics on it and found that the Long term fuel trim regulates back close to 0% instead of 25%+ at idle if the revs go up. however i’ve not found any vacuum leaks and the car has no issue such as starting or rough idling, nothing of that nature. it did have a terrible fuel economy at 16mpg but after cleaning the MAF sensor it went back up to normal.... however i still have the code. now, i actually disconnected the MAF as a little test, and found out that the LTFT goes back down and stays around -6.2% when it’s disconnected does that mean the lean trim is due to the MAF? the o2 sensors seem fine too, although one of them weirdly hits 1.25v at times. your opinioms and advice would be appreciated

i’ve attached some of the statistics
 

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