Obd2 Codes No Check Engine Light

2008 gmc yukon check engine light on 2012 gmc terrain check engine light on in this article we take a look at common problems that trigger the check engine light to come on in gmc vehicles and how to read the fault codes yourself with an obd ii scanner.

Obd2 codes no check engine light. Your check engine light is illuminated when a fault is detected with one of your vehicle s monitored systems. You will need an obd scan tool. Cry for help in the 216. Watch the check engine light on the dash.

Many car makers design their computers to alert the driver of a problem by turning on the check engine light and storing a trouble code in the computer s memory. No check engine light but codes my check engine light is on but no codes. Read your article still a little in the dark and i m actually mechanically inclined. But check engine light is on but no codes showing up.

Obd2 trouble codes are components of the troubleshooting system. Once the sequence has been initiated the check engine light begins to flash. The simplest way to reset the check engine light is with an obd2 scanner. A pause separates the first digit from the second digit.

Each flash represents a number in a two digit trouble code stored in the computer. If a problem occurs but does not meet the software s threshold for the number of times the problem must. Flash flash pause flash flash. The scanner allows you to communicate with the computer and retrieve the trouble codes.

Just purchased 2008 chevy hhr and need to get e check. It s still recommended to check the trouble codes first with an obd2 scanner if the check engine light is on. Here are some different ways how you can reset your check engine light. In order to find out the reason the light is illuminated you need to read the codes through the obd port.

For instance the code 23 flashes as follows. The most common reason for getting no obd code is simply a blown fuse. On many cars the engine control module ecm also called the engine control unit or electronic control unit ecu or powertrain control module pcm is on the same fuse circuit as other electrical devices such as the cigarette lighter or accessory port.