P-Bass problem

[galt]

I have a really weird problem with a Fender Japan P Bass. I hook it up to a tuner tune the low E then play the next fret which is an in tune F, but then play the next fret which is an out of tune F#. The next step G is fine. Really weird. Can I fix this some way?

 

[lowendgenerator]

If the frets are worn funny, and not crowned properly, it could cause an intonation issue.

 

[pilotjones]

Is the nut groove on that string cut really high?

 

[john grey]

I have a really weird problem with a Fender Japan P Bass. I hook it up to a tuner tune the low E then play the next fret which is an in tune F, but then play the next fret which is an out of tune F#. The next step G is fine. Really weird. Can I fix this some way?

IF you are getting a full F# from your 1st fret ( not a touch sharp but actually a full F#) your intonation is drastically off). Intonation is something you can certainly do yourself: it's almost as simple as tuning.
From a general perspective the heavier strings are typically a bit longer in the length from nut to bridge. The issue is the nut to bridge length that generally encompasses intonation.
Get a tuner that has a "needle swing" display and adjust you saddles via harmonic intonation procedure. Fret-less instruments are much easier to get a damn good intonation but fretted necks can come pretty close. There is a sticky and many uTube presentations on setting intonation so there is no need to go into that here but a full half step is seriously way off. IF it's a bit sharp it's still an intonation issue but some instruments have difficulty at extreme areas of the neck getting the cleanest note: it becomes a "trade-off" from a very clean note on the higher end or lower end.

 

[lowendgenerator]

I thin he's saying that his F# (2nd fret) is not intonating correctly.