Question about 1997 Mazda Protege

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I USED THE ACTRON CP9125 POCKET SCAN TO CHECK THINGS OVER WHEN MY CHECK ENGINE LIGHT WAS ON FOR A LONG TIME. I HAD FIVE P CODES. HOW AND WHERE DO I FIND OUT WHAT EXACTLY THESE CODES MEAN AND HOW TO FIX THE ISSUES OR CHECK TO MAKE SURE THEY ARE REALLY ISSUES?

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Use Google & TYPE: OBD & your code

Example
OBD PO301

Keep in mind that while codes have names related to vehicle
systems & the sensors themselves,the codes do not mean you
change parts,mainly the sensors

About 70% of the time, a sensor will have failed & needs to be replaced

First you get the codes
Then google them to find out what SYSTEM has a FAULT
Then you have to learn about the sensor,how it works & how
to test it
That is called component testing

You only replace parts that fail a test,so you need a volt meter,
usually a professional scan tool & other test equipment, to work
on vehicles & 50% of the time, a wiring diagram

If the sensors are good,then you have to check/test the wiring
If that is good, then you have mechanical problems that are more serious

Most all sensors get their signals from moving mechanical parts

You can as you do,have several codes & some are not explainable
or related to the main vehicle driveabiltiy issue

Posted on May 11, 2014

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