hornsfan10609
Certified Mazda Tech
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- 2003.5 Mazdaspeed Protege x2
Yes the Mass Air Flow sensor not the Manifold Absolute Pressure sensor, the larger black sensor in the intake piping. You need to know which O2 sensor the code is for, primary or secondary. Does the car have a stock exhaust with cats? The fuel regulator code is most likely the FP solenoid on the intake with the brown plug failing, they are a dime a dozen at the junkyard or around $90 new at the dealer. I typically grab a handful of the FP and VICS/VTCS sensors when I go to a JY just in case. The TPS CEL could be a bad TPS or a dirty throttle body. You can get a used TB and swap it or replace the sensor itself.