Toyota vehicles are equipped with warning light symbols to alert drivers of potential issues or malfunctions. Understanding these symbols and their meanings can help you address problems promptly and maintain the optimal performance of your Toyota. This guide provides insights into 20 common Toyota warning light symbols along with their associated DTC (Diagnostic Trouble Code) codes.
- Check Engine Light:
- Meaning: Indicates a potential issue with the engine or emissions system.
- DTC Codes: P0300 (Random/Multiple Cylinder Misfire Detected), P0171 (System Too Lean Bank 1), P0420 (Catalyst System Efficiency Below Threshold).
- Battery Warning Light:
- Meaning: Indicates a problem with the charging system or battery.
- DTC Codes: P0562 (System Voltage Low), P0563 (System Voltage High), P1604 (Startability Malfunction).
- Oil Pressure Warning Light:
- Meaning: Indicates low oil pressure, which can damage the engine.
- DTC Codes: P0522 (Engine Oil Pressure Sensor/Switch Low Voltage), P0523 (Engine Oil Pressure Sensor/Switch High Voltage), P0520 (Engine Oil Pressure Sensor/Switch Circuit Malfunction).
- Tire Pressure Monitoring System (TPMS) Light:
- Meaning: Indicates low tire pressure or a TPMS malfunction.
- DTC Codes: C2122 (Transmitter ID not Received in Main Mode), C2141 (Transmitter ID1 Operation Stop), C2161 (Transmitter ID not Received in Initialization Mode).
- Brake System Warning Light:
- Meaning: Indicates a problem with the brake system, such as low brake fluid or a malfunction.
- DTC Codes: C1256 (Accumulator Low Pressure), C1241 (Low Battery Positive Voltage), C1246 (Stroke Sensor Malfunction).
- ABS Warning Light:
- Meaning: Indicates a problem with the Anti-lock Braking System.
- DTC Codes: C1210 (Zero Point Calibration of Yaw Rate Sensor Undone), C1223 (ABS Control System Malfunction), C1249 (Stop Light Switch Circuit Malfunction).
- VSC (Vehicle Stability Control) Off Indicator:
- Meaning: Indicates that the Vehicle Stability Control system is turned off.
- DTC Codes: C1360 (Yaw Rate Sensor Signal Missing), C1300 (Engine Control System Malfunction), C1391 (Malfunction in Deceleration Sensor).
- SRS (Supplemental Restraint System) Warning Light:
- Meaning: Indicates a problem with the airbag system or seat belt pretensioners.
- DTC Codes: B0100 (Short in D Squib Circuit), B1100 (Occupant Classification Sensor Malfunction), B1650 (Occupant Classification System Malfunction).
- Power Steering Warning Light:
- Meaning: Indicates a malfunction in the power steering system.
- DTC Codes: C1528 (Steering Angle Sensor Initialization Incomplete), C1554 (Steering Angle Sensor Power Source Voltage Malfunction), C1568 (Motor Malfunction).
- Engine Coolant Temperature Warning Light:
- Meaning: Indicates that the engine coolant temperature is too high.
- DTC Codes: P0117 (Engine Coolant Temperature Circuit Low Input), P0118 (Engine Coolant Temperature Circuit High Input), P0128 (Coolant Thermostat Malfunction).
- Electronic Throttle Control System (ETCS) Warning Light:
- Meaning: Indicates a problem with the electronic throttle control system.
- DTC Codes: P2118 (Throttle Actuator Control Motor Current Range/Performance), P2119 (Throttle Actuator Control Throttle Body Range/Performance), P2122 (Throttle/Pedal Position Sensor/Switch D Circuit Low Input).
- Oil Level Warning Light:
- Meaning: Indicates that the engine oil level is too low.
- DTC Codes: P0521 (Engine Oil Pressure Sensor/Switch Range/Performance), P0522 (Engine Oil Pressure Sensor/Switch Low Voltage), P0523 (Engine Oil Pressure Sensor/Switch High Voltage).
- Airbag System Warning Light:
- Meaning: Indicates a problem with the airbag system or seat belt pretensioners.
- DTC Codes: B0100 (Short in D Squib Circuit), B1100 (Occupant Classification Sensor Malfunction), B1650 (Occupant Classification System Malfunction).
- Electronic Stability Control (ESC) OFF Indicator:
- Meaning: Indicates that the Electronic Stability Control system is turned off.
- DTC Codes: C1210 (Zero Point Calibration of Yaw Rate Sensor Undone), C1300 (Engine Control System Malfunction), C1391 (Malfunction in Deceleration Sensor).
- Malfunction Indicator Lamp (MIL) Indicator:
- Meaning: Indicates a malfunction detected by the On-Board Diagnostics (OBD) system.
- DTC Codes: P0300 (Random/Multiple Cylinder Misfire Detected), P0171 (System Too Lean Bank 1), P0420 (Catalyst System Efficiency Below Threshold).
- Pre-Collision System Warning Light:
- Meaning: Indicates a malfunction in the Pre-Collision System.
- DTC Codes: C1A10 (Front Radar Sensor Incorrect Axial Gap Adjustment), C1AA9 (Front Camera Module Communication Stop), C1AA5 (Millimeter Wave Radar Sensor Communication Stop).
- Lane Departure Alert (LDA) Indicator:
- Meaning: Indicates a problem with the Lane Departure Alert system.
- DTC Codes: C1A10 (Front Radar Sensor Incorrect Axial Gap Adjustment), C1AA9 (Front Camera Module Communication Stop), C1AA5 (Millimeter Wave Radar Sensor Communication Stop).
- Automatic High Beam (AHB) Indicator:
- Meaning: Indicates a problem with the Automatic High Beam system.
- DTC Codes: C1A10 (Front Radar Sensor Incorrect Axial Gap Adjustment), C1AA9 (Front Camera Module Communication Stop), C1AA5 (Millimeter Wave Radar Sensor Communication Stop).
- Blind Spot Monitor (BSM) Indicator:
- Meaning: Indicates a malfunction in the Blind Spot Monitor system.
- DTC Codes: C1A10 (Front Radar Sensor Incorrect Axial Gap Adjustment), C1AA9 (Front Camera Module Communication Stop), C1AA5 (Millimeter Wave Radar Sensor Communication Stop).
Conclusion:
Being aware of the warning light symbols in your Toyota is crucial for maintaining the safety and performance of your vehicle. This comprehensive guide provides detailed explanations of 20 common warning light symbols along with their associated DTC codes. Stay informed about your vehicle’s health and take prompt action when necessary to ensure a safe and reliable driving experience.
