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How Do I Reset My Diagnostic Code?

Disconnect your battery. Remove the negative battery cable first, then the positive and allow the car to sit for a few minutes. Reconnect, using the positive first and then the negative. This resets the engine codes in some vehicles, though it also interrupts other functions, such as the clock and the radio settings.

Why can’t I clear codes on my car?

Your fault codes are live, this is the most common reason why your vehicle’s fault codes won’t clear. Hard codes on the other hand are current static faults that are affecting vehicle system performance. These types of codes need to be repaired before they can be cleared from the computer module.

How long do I leave battery disconnected to reset ECU?

Disconnecting the battery for a short time may not do the trick because the car’s computer, or ECU, still has some current in it. Waiting for over 15 minutes after disconnecting the engine will help ensure the equipment is reset.

Is there a way to clear OBD2 codes?

Remember, simply unplugging your battery won’t be enough to clear OBD2 codes. This works on older cars that just use OBD1 codes, but most cars made after around 1996 will require the full process described above.

How to diagnose a problem with a car code reader?

Diagnose car problems without going to a mechanic with an auto code reader. Simply plug it into the car’s computer system, then interpret the trouble code readout. Plug your car code reader into the diagnostic link connector under the dash (engine off).

Where do I find the trouble codes on my scanner?

Find the menu. When the scanner finishes booting up, look for a menu. Select “Codes” or “Trouble Codes” to open the main Codes menu. Depending on your scanner and year of the vehicle you may be presented with a few systems such as Engine/Powertrain, Transmission, Airbag, Brakes etc.

How do I clear cookies from my computer?

Click the Tools menu (three dotted lines in the upper-right corner), and open the Settings menu. Click Privacy, search, and services on the left-side menu. Under the section Clear browsing data, Click Choose what to clear. Select Cookies and other site data and Cached images and files.

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