Toyota Yaris P0301: Cylinder 1 – Misfire (Causes + How to Fix)

P0301 is a fairly common trouble code with the Toyota Yaris. 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 Yaris.  Fixing P0301 should be considered a high priority. Unlike a lot of … Read more

Toyota Yaris P0300: Meaning, Causes, + How to Fix

P0300 is a generic OBDII code that can occur with the Toyota Yaris. 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

Toyota Yaris P0171: Causes, Diagnosis, + How to Fix

One of the most common trouble codes with the Toyota Yaris is P0171. It indicates that your Toyota Yaris 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

Toyota Yaris P0430 Code: Causes + How to Fix

This page is meant to help you troubleshoot the Toyota Yaris 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

Toyota Yaris P0401: Meaning, Causes, How to Fix

P0401 is a very common OBDII trouble code that’ll pop up in the Toyota Yaris. 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