exhaust gas recirculation flow insuficient
Trouble code P0401 means:Exhaust gas recirculation-insufficient flow detected
Click the link.
Trouble code P0171 means:System too lean (bank 1)
Trouble code P0171 means :System too lean (bank 1)
you will have to get from Mazda or buy a used one
PO401 indicates an abnormal EGR flow.
You need OBD2 reader or scanner to get the codes
you needs a dpfe sensor
If you mean PO660 it is Intake Manifold Tuning Valve circuit Malfunction. Click the link.
Trouble code P0768 means: Shift solenoid D electrical problem
It means there is bad/no connection between the car's computer and the oxygen sensor after the catalytic converter.
Code P0120 on a 1998 Mazda Protege indicates a problem with the throttle position sensor (TPS) circuit. This code typically means that the engine control module (ECM) has detected an abnormal voltage reading from the TPS, which can affect engine performance and throttle response. Possible causes include a faulty TPS, wiring issues, or poor connections in the circuit. It's advisable to inspect the sensor and its connections to diagnose and resolve the issue.