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Quick Tip: OBD-II Mode 10 Permanent Codes

Applies To: ETHOS® Plus, ETHOS® PRO, ETHOS® Tech, MODIS Edge™, MODIS Ultra™, SOLUS Edge™, SOLUS PRO™, SOLUS Ultra®, VERDICT®, VERUS® Edge, VERUS® PRO, ZEUS®
Overview:

Vehicle: 2013 Lincoln MKZ. Have you ever had a vehicle come into the shop with an issue, only to find out that any codes were cleared somewhere else?   In this Diagnostic Quick Tip, National Field Trainer Jason Gabrenas shows you how to find those cleared codes using OBD-II mode 10.

Resolution:

VIDEO TRANSCRIPTION

On 2012 and newer vehicles, they added a new mode to OBD II. It's called mode 10, permanent trouble codes. It's any codes that still may have been cleared.

You could have cleared it with a scan tool even, but the computer hasn't run through the test to clear the codes so it'll still be stored in there for up to 400 days.

Let's go through and show you how this works. In order to get in there, we need to go into the OBD II generic side of the computer. So we'll go into OBD Direct and I've already got it hooked up to the car and it's already been identified.

Let's go in first and check it for codes to see if there's any in there. So we'll go into mode three here, Display Trouble Codes, and see what comes up.

No DTCs are present. So if there was a problem with a car and you're looking for codes, where do you go at this point? We can back up here and you see where it says over here it says $0A, that's your mode 10 displayed permanent trouble codes.

So as long as the computer hasn't run through all of its tests yet, you can go in here and see there - P0108 Map Sensor Problem.

If you had just gone through here and scanned the vehicle like you normally would, you would see that there weren't any codes in there and you wouldn't have a direction.

But with that mode 10, at least you can see as long as the computer hasn't run through all the tests yet, what was going on with the car before it got cleared.

Last Updated: May 30, 2019
 

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