wolfman1998
02-15-2008, 11:52 PM
I installed a new Secondary Air Pump and Secondary Air Pump Valve (and the vacuum lines that conect it )the other day because the BMW tech told me that it faulted. Now the check engine lite came on again but this time I took it to Auto Zone and checked the fault myself. Now it's P1475 Definition: leakage diagnostic pump read switch did not close. Does anybody know what the does that mean.