Toyota Fault Codes
Toyota vehicles are known for reliability, but they still generate common OBD-II codes related to VVT-i, EVAP systems, oxygen sensors and catalytic converters—especially on higher-mileage models. Use the list below to look up Toyota-specific and generic codes that frequently appear on Camry, Corolla, RAV4, Tacoma, Highlander and other models.
Common Toyota Issues
Common Toyota issues: P0010/P0011/P0012 (VVT-i timing), P0420 (catalyst efficiency), P0455/P0442 (EVAP leaks / gas cap), P0300 series misfires, P0504 (brake switch). Always verify oil level and quality first on VVT-related codes.
3 Toyota-related fault code(s) in our database
| Code | Description | System | Severity |
|---|---|---|---|
| P0504 | Brake Light Switch Signal Correlation | Brake System | Med |
| P1349 | VVT System Malfunction (Bank 1) | Ignition System | High |
| P1135 | Air Fuel Ratio Sensor Heater Circuit Malfunction (Bank 1 Sensor 1) | Fuel & Air Metering | Med |
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