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Thankfully, all Toyotas have onboard computers and built-in diagnostic systems. This system generates Diagnostic Trouble Codes (DTC), including Generic, Manufacturer-Specific, and Enhanced codes. These codes can help you pinpoint the Check Engine Light issues like faulty gas caps, oxygen sensors, or spark plugs. Let’s explore the DTC Types and their usefulness in identifying and fixing the Check Engine Light issue.    Types of DTC Generic Codes (P0, P2, P3): Vehicle manufacturers have standardized these codes. These codes provide general system information about the vehicle's current health status. Sometimes, a given code can solve the issue at hand. Other times, they can only provide a starting point for troubleshooting. The qualified mechanic can then perform additional diagnostic tests. Manufacturer-Specific Codes (P1): These codes are unique to specific Toyota models and provide additional information about vehicle status. They help narrow down the issue and find appropriate solutions. Enhanced Codes: Enhanced codes are specific to systems or components in a particular make and model. They offer even more detailed information about the problem and are helpful for advanced troubleshooting. However, they often require specialized diagnostic tools to retrieve. Toyota Check Engine Light Solutions Toyota's built-in diagnostic system has provided the DTC reason for the check engine light. #Airflow Sensor #Catalytic Converter Repair #Check Engine Light...