The code P0404 on a Pontiac Aztec indicates a problem with the Exhaust Gas Recirculation (EGR) system, specifically that the EGR flow is insufficient. This can be caused by a faulty EGR valve, clogged passages, or issues with the vacuum lines. Addressing this code typically involves inspecting the EGR system for blockages or failures and replacing any defective components to ensure proper engine performance and emissions control.
Trouble code P0404 means: O2 (B1 S1) Heater Circuit
Trouble code P0404 means: EGR Position Sensor Signal Performance
The EGR valve has failed, and will need replaced.
I believe this is a Pontiac paint code
Trouble code P0400 means: EGR System Performance
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.
Trouble Code P1640 means:Control module output A circuit
Trouble code P0742 means: Torque Converter Clutch Solenoid Circuit Stuck On
Trouble code P1336 means: CKP System Variation Not Learned
Trouble code P0440 means: EVAP System No Flow During Purge
from my understanding that code is just a factory assessed code.doesnt really mean to much from my understanding that code is just a factory assessed code.doesnt really mean to much
Coolant Temp below thermostat regulating temp.