What does ECU light mean?
engine management light
What is the engine management light? The light is connected to your car’s engine control unit (ECU), and is the first indicator of issues with the engine’s electronic ‘brain’. This controls things such as the fuel and air mixture and the ignition timing to help your car’s engine run smoothly.
What is a ECU malfunction?
When a car’s Engine Control Unit (ECU) senses a problem or malfunctioning within the vehicle, it triggers an ECU fault code that will turn on the check engine light. ECU fault codes, also known as diagnostic trouble codes (DTC) are part of the on-board diagnostic (OBD II) system in your car.
How long does it take for the ECU to relearn?
When resetting the ECU it will take about 50km (31 miles) to relearn.
What should I do if my ECU light comes back on?
Drive the car for at least 10 miles for the ecu to learn, if there is a problem with your vehicle then the check engine light will come back on and you can analyze the fault code that the ECM throws. These codes will guide you towards the root of the problem and you can begin replacing parts to try to fix the issue.
What can a faulty ECU do to a car?
The ECU, or engine control unit, is a major component of your car’s onboard computer. It’s used to regulate many systems and subsystems in your car’s engine, drive train and other major components. There are many symptoms that can be associated with a faulty ECU.
Can a ECU be reset in a new car?
Can a ECU be reset? Yes, all ECU (Engine Control units) can be reset and be should reset once per manufacturer’s guideline for a smooth relearn process or upon installing a replacement unit.
How is the ECU dependent on the drivetrain?
The engine and drivetrain are the most dependent on the ECU. Through a numerous array of electronic sensors, chips, and components within the vehicle, the ECU can transmit data feedback to the engine. The nature of this feedback will determine which function the engine will perform next.