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Call autozone and they can help with the code.
Trouble code P0715 means:Input/turbine speed sensor circuit malfunction
no sgc signal. cam position sensor
Trouble code P0401 means:Exhaust gas recirculation flow insufficient detected
po421 is catalytic converter problem rear bank
Trouble code P0720 means: Output Shaft Speed Sensor Circuit
typemake, model, code into your computer .i have a list of codes and there is no p1105 code, clear your machine and try again
variable resonance induction solenoids.solenoid not closing or opening
vacume leaks and exhaust leaks can also trigger that code . double check those amd the connection at the o2 harness for corrosion
Trouble code P1526 means: Air Bypass Systemcan i see some pics of the air bypass system
Trouble code P0730 means:Incorrect gear ratio
The code PO404 on a 2000 Mazda Millennia 2.3 means that there is something wrong with how the vehicle is processing the oxygen it needs for combustion. This would mean an oxygen sensor or solenoid is bad. This vehicle has two oxygen sensors.