This page is meant to help you troubleshoot the Chevy Express 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 Express quite often. Here’s what it means: P0741: Torque Converter Clutch Circuit → Performance or Stuck Off The Express 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 Express 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 van’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 Express. 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
P0302 in the Chevy Express is a common OBD II trouble code. It indicates that your van’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 Express’s check engine light to come on, you shouldn’t drive your van at … Read more
A very common issue with the Chevy Express is the P0449 code. This trouble code is a reference number that is given to you when you plug your Express 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
P0300 is a generic OBDII code that can occur with the Chevy Express. This code indicates that your van’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
The P0440 code is a common trouble code that many Chevy Express owners may encounter. It indicates that there is an issue with the van’s Evaporative Emission Control (EVAP) system. Specifically, the EVAP system is malfunctioning. A variety of causes can trigger the P0440 code, with the most common one being a loose or damaged … Read more
P0455 in the Chevy Express is a trouble code that indicates your truck has a LARGE evaporative emissions leak. With this code, you shouldn’t notice any symptoms besides perhaps a noticeable fuel smell. P0455 usually is not an immediate threat to the driveability of your Express. But, whenever the check engine light is on, it’s … Read more
A prevalent issue with the Chevy Express is the P0446 code. This code corresponds to a specific number obtained when connecting your Express 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