Mazda 3 P0113: IAT Sensor → High Input Problem

P0113 is an OBDII trouble code that occurs when the Mazda 3′s engine management computer detects that there is an issue with the Intake Air Temperature (IAT) Sensor, specifically that there is a High Input Problem with it. P0113: IAT Sensor – High Input Problem The IAT sensor is responsible for measuring the air temperature … Read more

Mazda 3 P0135: Heated 02 Sensor – Heating Element Failed

P0135 is a very common OBDII code that occurs in the Mazda 3. It is caused by a failure in one of the oxygen sensors heated elements, specifically bank 1 sensor 1. It technically stands for:     The purpose of the heated element in the oxygen sensor is to quickly bring your O2 sensor … Read more

P0128 Mazda 3: Meaning, Causes, How to Fix

The P0128 OBD II trouble code indicates that your Mazda 3’s engine coolant temperature has not reached its required operating temperature within a certain amount of time after starting the car. This code can appear as soon as you start your vehicle, or it can also occur while driving. It’s essential to address this issue … Read more

Mazda 3 P0171: Causes, Diagnosis, + How to Fix

One of the most common trouble codes with the Mazda 3 is P0171. It indicates that your Mazda 3 is running lean on the bank one side.  It’s the most common air/fuel mixture-related code. It’s not the most complicated OBDII trouble code to diagnose. It is also one of the most common codes. The most … Read more

Mazda 3 P0340 Code: Diagnosis, Causes, How to Fix

One of the more common engine management trouble codes that can occur in the Mazda 3 is P0340. It’s a generic code, which means it has the same definition for every car or truck made after 1996. P0340 is related to the camshaft position sensor and points to an issue with the wiring harness connected … Read more

Mazda 3 P0301: Cylinder 1 – Misfire (Causes + How to Fix)

P0301 is a fairly common trouble code with the Mazda 3. It’s an OBD2 code and indicates that your car’s first cylinder is misfiring. P0301 is certainly a cause for concern and should be considered a threat to the drivability of your 3.  Fixing P0301 should be considered a high priority. Unlike a lot of … Read more

Mazda 3 P0300: Meaning, Causes, + How to Fix

P0300 is a generic OBDII code that can occur with the Mazda 3. This code indicates that your car’s engine is misfiring and can be a drivability threat. P0300 is often accompanied by cylinder-specific misfire codes (P030X, where the X indicates the cylinder number that is misfiring). If you have P0300 and a cylinder-specific misfire, … Read more