Car Dashboard Check Engine Light Symbol Meaning
What is the check engine light?
The check engine light is a warning light that appears on your car’s dashboard when there is a problem with the vehicle’s engine or emissions system. The light is usually illuminated by a yellow or orange symbol, and it may be accompanied by other warning lights, such as the ABS or airbag light.
What does the check engine light mean?
The check engine light can indicate a wide range of problems with your car, from minor issues, such as a loose gas cap, to more serious problems, such as a blown head gasket. In most cases, the check engine light will be triggered by a sensor that has detected a problem with the engine or emissions system. The sensor will send a signal to the car’s computer, which will then turn on the check engine light.
What should I do if the check engine light comes on?
If the check engine light comes on, it is important to have your car inspected by a mechanic as soon as possible. Ignoring the check engine light can lead to more serious problems with your car, and it may even void your warranty. The mechanic will be able to diagnose the problem and make the necessary repairs.
How can I prevent the check engine light from coming on?
There are a few things you can do to prevent the check engine light from coming on:
- Regularly maintain your car, including oil changes, tire rotations, and brake inspections
- Use high-quality gasoline
- Avoid driving in harsh conditions
- If you do have a problem with your car, have it repaired as soon as possible
Common check engine light codes
The following are some of the most common check engine light codes:
- P0101 – Mass air flow (MAF) sensor circuit range/performance problem
- P0102 – MAF sensor circuit low input
- P0103 – MAF sensor circuit high input
- P0113 – Intake air temperature (IAT) sensor circuit high input
- P0118 – Engine coolant temperature (ECT) sensor circuit high input
- P0122 – Throttle position (TP) sensor circuit low input
- P0123 – TP sensor circuit high input
- P0131 – Oxygen (O2) sensor circuit low voltage (bank 1, sensor 1)
- P0135 – O2 sensor heater circuit malfunction (bank 1, sensor 1)
- P0141 – O2 sensor heater circuit malfunction (bank 1, sensor 2)
Conclusion
The check engine light is a warning light that should not be ignored. If the check engine light comes on, it is important to have your car inspected by a mechanic as soon as possible. Ignoring the check engine light can lead to more serious problems with your car, and it may even void your warranty.
