Toyota trouble codes
Toyota supports OBD-II in North America from 1996 and EOBD in Europe. Hybrid models store many manufacturer-specific codes for the hybrid system; generic codes still cover the engine and emissions. Dealer software is Techstream.
Generic codes often seen on Toyota vehicles
These generic codes apply to all OBD-II compliant vehicles, including Toyota models.
- P0300 Random/Multiple Cylinder Misfire Detected
- P0420 Catalyst System Efficiency Below Threshold (Bank 1)
- P0171 System Too Lean (Bank 1)
- P0128 Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)
- P0455 Evaporative Emission Control System Leak Detected (Large Leak)
- P0299 Turbocharger/Supercharger Underboost
- P0016 Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A)
- P0401 Exhaust Gas Recirculation Flow Insufficient Detected
- P0335 Crankshaft Position Sensor "A" Circuit
- P0562 System Voltage Low
- U0100 Lost Communication With ECM/PCM "A"
- P0700 Transmission Control System (MIL Request)
Manufacturer-specific codes
Codes with a 1 as the first digit (for example P1xxx) are defined by the manufacturer. Their meaning can differ between models and years, so this site does not guess them. Use the service information or dealer-level diagnostics for Toyota to read their exact description.