P0135 is a very common OBDII code that occurs in the Chevy Trailblazer. It is caused by a failure in one of the oxygen sensors heated elements, specifically bank 1 sensor 1. It technically stands for: P0135: Heated Oxygen Sensor → Sensor Heater Circuit Malfunction → Bank 1, Sensor 1 The purpose of the heated … Read more
P0401 is a very common OBDII trouble code that’ll pop up in the Chevy Trailblazer. It has to do with the emissions system and stands for Exhaust Gas Recirculation (EGR)→ Insufficient Flow. The EGR system in your vehicle is responsible for recirculating exhaust gasses in order to lower the vehicle’s emissions output. There are three … Read more
This page is meant to help you troubleshoot the Chevy Trailblazer 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
P0741 is a very common trouble code. It’s know to affect the Chevy Trailblazer quite often. Here’s what it means: P0741: Torque Converter Clutch Circuit → Performance or Stuck Off The Trailblazer uses a clutch in the torque converter to lock the engine and transmission together at highway speed. P0741 can register whenever this connection … Read more
If your Chevy Trailblazer 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 vehicle’s fourth cylinder is misfiring. P0304 is a drivability concern and should be dealt with right away. If … Read more
P0121 is a somewhat common trouble code with the Chevy Trailblazer. It’s an OBDII code and has to do with the Throttle Pedal Position Sensor. It is relatively serious problem since it leaves your vehicle in failsafe mode. P0121: Throttle Pedal Position Sensor → Switch (TPS) A Circuit Range → Performance Problem OBDII code P0121 … Read more
If your Chevy Trailblazer 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 vehicle’s third cylinder is misfiring. P0303 is a real drivability concern and should be dealt with right away. If … Read more
P0302 in the Chevy Trailblazer is a common OBD II trouble code. It indicates that your vehicle’s second cylinder has a misfire. P0302 is a real drivability concern and should be dealt with right away. If it’s bad enough to cause your Trailblazer’s check engine light to come on, you shouldn’t drive your vehicle at … Read more
A very common issue with the Chevy Trailblazer is the P0449 code. This trouble code is a reference number that is given to you when you plug your Trailblazer into a OBDII scanner. P0449 deals with the evaporative emissions control system. It often appears with, or is related other codes, such as P0420, P0446, and … Read more
P0301 is a fairly common trouble code with the Chevy Trailblazer. It’s an OBD2 code and indicates that your vehicle’s first cylinder is misfiring. P0301 is certainly a cause for concern and should be considered a threat to the drivability of your Trailblazer. Fixing P0301 should be considered a high priority. Unlike a lot of … Read more