The battery disconnection technique is a conventional way of resetting your car’s check engine light in some cars. Part 6 of 6: If the Check Engine Light returns. Follow these steps to troubleshoot your Check Engine Light (CEL), also known as the Service Engine Soon light. “OBD” stands for “On-Board Diagnostics” and OBD-II scanners are suitable for all vehicles made after 1996. By far, the best way to reset the check engine light is to fix the problem that the ECM is reporting. B. To reset the check engine light using the scan tool, whatever type you use, start with your vehicle turned off. The reset check engine lights process takes an extra step on modern cars. Resetting Check Engine Light Removing the Negative Battery terminal for 30 seconds and re-installing it will reset the Check Engine Light but you may want to pull any code(s) from the OBDII. There are a number of ways to reset a check engine light, but some methods may be better than others. The gas cap is an important part to the fuel delivery system since it prevents gas from leaving the tank and balances out the correct pressure for the system. Turn the ignition on. Another method that you can follow to reset your check engine light without disconnecting the battery is to turn your vehicle on and off three times. While the DTC does not tell an auto repair technician what to replace, it can lead them in the right direction to make a repair. The connector may have a removable cover. One final option is called a “Hard Reset,” which requires you to disconnect the battery. The orange check engine light is a car's way of telling you something is wrong. After enough time as passed, release the brake and reconnect the battery. In return, the Engine Control Unit (ECU) will trigger a fault code which typically is in the following format P0001. first, and fix the problem prior to reseting the CEL/SES light (i.e. The check engine light is an irritation for many drivers, but it gives you essential information about your car and shouldn't be ignored. off the light is to use a scan tool and clear the codes. If the light remains on, the problem is still present. The Check Engine Light should stay on when you turn the ignition to ON position, and until you start the engine, the light should turn off. This will keep your emissions down and reduce refueling costs. If you’re a do-it-yourselfer or you just don’t want to see the light, you have a couple of options to reset the check engine light, aside from pulling the bulb or covering it with electrical tape. Please note that this method is NOT As an alternative, you could try disconnecting the car's main battery for about clear the codes). Use Android or iPhone to reset the Check Engine Light. A few weeks ago my indy told me my "service engine soon" light was from a faulty thermostat. Our certified technicians have the skills and know-how to not only properly reset the light, but to also make sure that the rest of … You could even pull the electronic control module fuse on many models. You will need a wrench. This will again show the reason why the "check engine" light is on. If you notice the engine light is still on after three days, then it is time you tried some of the methods showed above or take it for mechanical repairs. Each vehicle has its own criteria for self-clearing DTCs and turning off the CEL, so it may take days or weeks for the ECM to do it on its own. Why Does the Emergency Brake Light Stay on in My Chevy C1500 Pickup? The two main computers we usually worry about are the engine or powertrain control module (ECM or PCM) and the transmission control module (TCM). This will deplete any energy in vehicle capacitors. Using this data, it can fine-tune actuators to deliver more power when needed and reduced emissions whenever possible. recommended and may result in radio presets being lost and other unknown affects. Engine Vacuum Leak: Symptoms and Solutions, How to Fix a Catalytic Converter (Without Replacing It), Understanding OBD or On Board Diagnostics and Engine Codes, Troubleshooting Engine Driveability Problems: Surging or Misfiring, Finding and Fixing an Evaporative Emissions Leak, Dodge Grand Caravan Flashing LED Display After Battery Disconnect, Troubleshooting Common Condenser Fan Problems. and will not cause any side effects. engine continues to run. It all depends on the kind of …