Mazda 6 P0401: Meaning, Causes, How to Fix

P0401 is a very common OBDII trouble code that’ll pop up in the Mazda 6. It has to do with the emissions system and stands for Exhaust Gas Recirculation (EGR)→ Insufficient Flow. The EGR system in your car is responsible for recirculating exhaust gasses in order to lower the vehicle’s emissions output. There are three … Read more

Mazda 6 P0304: Cylinder 4 Misfire – Diagnosis + Fix

If your Mazda 6 has the P0304 trouble code, you should know that it’s about as common of a code as there is. It’s a generic OBD IIcode (same meaning for all vehicles) that indicates that your car’s fourth cylinder is misfiring. P0304 is a drivability concern and should be dealt with right away. If … Read more

Mazda 6 P0456: Meaning, Causes, How to Fix

One of the most common trouble codes with the Mazda 6 is the P0456 code. This trouble code references a number that is given to you when you plug your 6 into an OBDII scanner. P0456 Indicates that there is a small leak in the evaporative emission control system. It often appears with or is … Read more

Mazda 6 P0446: Meaning, Causes, How to Fix

A prevalent issue with the Mazda 6 is the P0446 code. This code corresponds to a specific number obtained when connecting your 6 to an OBDII scanner. A faulty vent control valve most commonly causes P0446. Definition P0446: EVAP System – Vent Control Circuit – Malfunction Symptoms Usually none Common Causes Bad EVAP Vent Control … Read more

Mazda 6 P0442 Engine Code: Causes + How to Fix

One of the most common issues that happens with the Mazda 6 is the P0442 trouble code. This code appears when connecting the vehicle to an OBDII scanner and pertains to the emissions system.  While it’s unlikely to cause a breakdown, it can be bothersome and may result in a failed emissions test for your … Read more

Mazda 6 P0441: Meaning, Causes, How to Fix

P0441 is one of the more common OBD II codes that can occur in the Mazda 6.  It is frequently caused by a loose or bad gas cap, cracked or disconnected EVAP system hoses, vacuum leaks, or a bad purge valve. Always start by taking a look at the gas cap. P0441 is related to … Read more

Mazda 6 P0430 Code: Causes + How to Fix

This page is meant to help you troubleshoot the Mazda 6 P0430 trouble code. It covers the P0430 code’s meaning, symptoms, causes, and possible solutions. P0430 is an emissions-related trouble code and is virtually never a breakdown risk. P0430 is usually caused by a catalytic converter issue or a bad O2 sensor. Table of Contents … Read more

Mazda 6 P0420: Meaning, Causes, + How to Fix

This page is meant to help you troubleshoot the Mazda 6 P0420 trouble code. It covers the P0420 code’s meaning, symptoms, causes, and possible solutions. P0420 is the most common OBDII code and is virtually never a breakdown risk. A failing oxygen sensor or bad catalytic converter are the most common causes of P0420. Table … Read more

Mazda 6 P0174: Meaning, Causes, How to Fix

One of the most common trouble codes with the Mazda 6 is P0174. It indicates that your Mazda 6 is running lean on the bank two side of the engine.  P0174 and P0171 (fuel trim lean bank one) are the most frequently seen air/fuel mixture-related codes. If they appear together, it reduces the list of … Read more

P0303 Mazda 6: Cylinder 3 Misfire Diagnosis

If your Mazda 6 has the P0303 trouble code, you should know that it’s about as common of a code as there is. It’s a generic code (same meaning for all vehicles) that indicates that your car’s third cylinder is misfiring. P0303 is a real drivability concern and should be dealt with right away. If … Read more