This is where you’ll find codes specifically for your Toyota. Toyota has been around since 1937 and is a very popular and renowned brand Founded in Japan and now sold worldwide. Some of their most popular makes are the Camry, Corolla, Rav4, Highlander, and Tacoma. In this section, we will cover the most common trouble codes for Toyotas, and explain what they mean, the symptoms, the cause, the severity, and we will walk you through basic diagnostic steps. If the issue that you are having is not covered in this section, see our other DTC categories for general codes and issues.
Toyota Code P0456 Definition Evaporative emission control system leak (small). Toyota Code P0456 Meaning The evaporative emission control (EVAP) system in your Toyota prevents fuel vapors from escaping into the atmosphere. The fuel vapors from the fuel tank are absorbed and stored by charcoal pellets in the charcoal canister. The vent control valve is controlled by...
Toyota Code P0420 Definition Catalyst system efficiency below threshold (Bank 1). What Does P0420 Mean For Your Toyota? The function of the catalytic converter is to break down harmful pollutants that are created by your Toyota during the combustion cycle and convert them into harmless gases. Code P0420 indicates that the catalytic converter is not...
Toyota Code P0171 Definition System too lean (Bank 1). What Does P0171 Mean For Your Toyota? Combustion engines run most efficiently when they maintain an air-fuel mixture ratio of 14.7 parts air to 1 part fuel. When there are more than 14.7 parts air to 1 part fuel in the air-fuel mixture, a lean condition...
Toyota Code P0128 Definition Coolant thermostat temperature below regulating temperature Toyota Code P0128 Meaning The powertrain control module (PCM) tracks how long it takes for the engine of your Toyota to reach and maintain the correct operating temperature. When the correct engine operating temperature is reached, the powertrain control module orders the fuel system to enter “closed...
Toyota Code P0300 Definition Random/Multiple cylinder misfire detected. Commonly associated with Toyota codes: P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308 What Does Toyota P0300 Mean? Toyota code P0300 indicates that one or more cylinders are experiencing misfires. A misfire occurs when an insufficient amount of fuel is burning in a cylinder. The efficient burning...
