What does code 1540 mean we only have to digitize a pattern

What is your question?

When car warms up won't go over 2500 RPMs and throws code 1540 and does it every time. 2002 Mazda millenia s

What makes this problem better or worse?

only happens when engine warms up maybe 5-6 miles

How long has your 2002 Mazda Millenia had this problem?

30 days