Hi, I'm new here and have a problem with a 95 Millenia. The check engine light came on, I checked it and got 3 codes. P0725, P1195, and P1000. I'm not really sure what they mean. If someone could point me in a direction I would apprieciate it. thanks in advance

Jason

 

Here you go...

http://www.wattora.com/mods/obdii/

P0725 Engine Speed input Circuit Malfunction
P1000 Transmission Solenoid Malfunction - OBD II Test Incomplete (Mazda)
P1195 1/1 O2 Sensor Slow During Catalyst Monitor (Chrysler) or P1195 SCP HBCC Failed To Initialize

 

I thought the whole idea behind OBD2 was so that codes were universal from all manufacturers? Not the case by that list as some were different. Do you know why that is sstlaure?
Anyways, for Mazda only, the P1000 means that not all of the on-board system tests have been run or completed. Not a worry on that as a 95 Millenia is close to impossible to run the catalyst monitor.
The P0725 indicates that the Transmission Control Module is not getting a engine speed or tachometer signal from the Engine Computer. Does the tach on the dash work?
Assume you have a Millenia with the 2.5l engine as the 1195 code does not apply to the 2.3l engine operating system. A P1195 says the the barometric pressure signal was not within range. The engine computer does a one time check of baro pressure thru the boost sensor when key is cycled to run but before start-up. If the signal voltage is out of normal range then will set the code. Have replaced a dozen or so sensors for this but either check or have checked out first as the sensor is around $260.00 and is kind to spendy to be guessing at.

 

When it comes to DTC's, here is what I learned through Chevy...all codes P0xxx (e.g. P0300) are generic codes, but P1xxx (e.g. P1765) are manufacturer specific. It's been awhile now, but thats what I remember hearing about OBDII.