Question about 2000 Mazda MPV
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Posted on Jan 02, 2017
SOURCE: p1512 fault code on mazda
I had the same problem and it happened at high speed on an Interstate Mountain (Hwy 5 from Kelowna to Meritt).... so scared but car ran fine all the way.... so hope it goes away.... I had the check engine light removed and hope it does not reappear
Posted on Aug 31, 2009
P0031 - most likely pointing to a failed O2 sensor (bank 1 sensor 1 is located before the catalytic converter)
P0421 - failed catalytic converter or a failed O2 sensor
P1512 - intake manifold shutter valve is stuck - may be caused by the O2 sensor, but may not
I recommend replacing your O2 sensor first and see what happens
Posted on Sep 18, 2009
P1512 is stored when the Intake Manifold Runner Control shutter (IMRC ) valve is stuck closed.
The IMRC valve is opened by an actuator located behind the radiator, on top of valve cover.
The IMRC actuator is controlled by the PCM (main computer), and it is wired to
The actuator is connected to a 5-volt Black/Blue wire used to send the position switch voltage signal, and a Brown/White ground wire. When the IMRC actuator is closing the valves in the intake manifold, the switch should open, and the Black/Blue wire at the IMRC actuator should read 5 volts. If that does not happen, and you get the CEL, then the problem is the valve.
Repair is done testing and replacing faulty part, or replacing both valve and actuator.
About radiator fan problem, I do not think that they are related, first get rid of the shutter valve code that can have several side effects.
Also, as this is a very common problem I suggest calling Mazda and finding out if there is any cover on this repair.
Posted on Sep 06, 2010
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