2003 BMW 325i with engine code P1446, what does the code mean?

Question

I have a 2003 325i BMW but what does the P1446 code mean? It pops up as diagnostic module tank leakage pump control circuit signal high. I don't understand what this means. Please help.

Answer 1

HI there

This code basically means there is a leak in the diagnostic pump module. This is used to check for leaks in the evap system. If it's leaking it will produce a higher voltage then normal. The evap system and the diagnostic module need to be inspected for leaks and electrical issues to the pump.

P1446 BMW - Diagnostic Module Tank Leakage Pump Control Circuit Signal High
Read more: https://www.autocodes.com/p1446_bmw.html