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Fuel trim question
6 years 8 months ago #12660
by Tyler
Replied by Tyler on topic Fuel trim question
For our info, which scanner are you using? Is this OEM data, or Global?
If you've cleared codes or disconnected the battery recently, then it's possible that the PCM simply hasn't entered the correct conditions to update the long term trims. If you haven't already, a test drive might get the long term moving.
It's also been my experience that Nissan 'Alpha' (their term for fuel trims) doesn't always translate well to Global data, hence why I asked earlier.
Some Nissan models I've seen don't even show a Long Term PID on the OEM side. Or if they even have one, it never moves, making me wonder if it's a false PID. 
If you've cleared codes or disconnected the battery recently, then it's possible that the PCM simply hasn't entered the correct conditions to update the long term trims. If you haven't already, a test drive might get the long term moving.
It's also been my experience that Nissan 'Alpha' (their term for fuel trims) doesn't always translate well to Global data, hence why I asked earlier.
Some Nissan models I've seen don't even show a Long Term PID on the OEM side. Or if they even have one, it never moves, making me wonder if it's a false PID. Please Log in or Create an account to join the conversation.
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