Few problems on my Z

Jordo!

As another member noted, that's a very sensitive sensor. Top it off to the max line and that will take care of it.

If it comes back, then there may be a leak, but odds are that will fix it.

That it was down at all suggests the pads might be worn down, so I'd have them checked.

That could be clogged air filters (inspect; if no light passes through them, replace or if reusable, clean), a vacuum leak (any stumbling at idle?) or weak battery (have it checked). Fouled plugs are a possibility too, given your mileage.

Not sure on that one...

None of that sounds especially serious, but at 90K a good once over on all the fluids, the belt, the brake pads, spark plugs, air filters, etc would be a good idea.

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