Mazda 6 Service Manual: Dtc p0420

Dtc p0403

Dtc p0443

Other materials:

Mazda 6 Service Manual: Heater core inspection
1. Remove the A/C unit. (See A/C UNIT REMOVAL/INSTALLATION.) 2. Remove the heater core from the A/C unit. 3. Inspect for cracks, damage, and coolant leakage. If any problems are found, replace the heater core. 4. Inspect for bent fins. If any are bent, use a flathead screwdriver to stra ...

Mazda 6 Service Manual: New standards
Following is a comparison of the previous standard and the new standard. #1 : Diagnostic trouble codes depend on the diagnostic test mode #2 : Controlled by the PCM #3 : In some models, there is a fuel pump relay that controls pump speed. That relay is now called the fuel pump relay (s ...