The P1170 code on a 1999 Mazda Protege typically indicates an issue with the fuel system, specifically related to the fuel pressure sensor or the fuel system's performance. To fix this code, start by checking the fuel pressure and ensuring it meets specifications. Inspect the wiring and connectors to the fuel pressure sensor for any damage or corrosion. If these components are in good condition, consider replacing the fuel pressure sensor itself to resolve the issue.
you needs a dpfe sensor
It refers to the Heated Oxygen Sensor, and specifically that the signal remains unchanged for more than 20 seconds after closed loop. Probably time to change it.
you will have to get from Mazda or buy a used one
Click the link.
You need OBD2 reader or scanner to get the codes
exhaust gas recirculation flow insuficient
Trouble code P0768 means: Shift solenoid D electrical problem
Trouble code P0171 means:System too lean (bank 1)
P0455 code for mazda Protede... Evaporative Emission System Leak Detected (gross leak/ no flow)
Trouble code P0400 means:Exhaust gas recirculation-flow malfunction
Trouble code P0170 means:Fuel trim malfunction (bank 1)
Trouble code P0420 means:Catalyst system efficiency below threshold