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On CAN compatible vehicles, the TID is now called MID for Monitor Identification. The first is the Test Identification (TID) that indicates the monitor test, and the second is the Component Identification (CID) that identifies the sensor or other component that is being tested.
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On OBD2 systems up to the introduction of Controller Area Network (CAN) electrical systems, there are two code identification tags for each line of data. Only then can you determine whether or not a particular Mode $06 test value is good, bad or somewhere in the middle. You also need a reference chart from the vehicle manufacturer that identifies what component or system test each line of code refers to, and what the acceptable range of values are for that particular test.
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This requires some math and conversion factors, or scantool software that can do the translation for you. The “$” symbol means the data is in hex code, not ordinary decimal numbers.įact that Mode $06 data is in hex code means it has to be converted into familiar decimal values for us to understand it.
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It is tabulated in hexadecimal code (a base 16 number system that uses digits 0 to 9 plus letters A through F), which is the computer language that the PCM uses to manage things. Mode $06 data is information the OBD2 system tracks and compiles on “noncontinuous” monitors.
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In fact, if a technician knows how to use Mode $06 to look for specific types of faults, they can usually keep the MIL (Malfunctioning Indicator Lamp) out and prevent unnecessary comebacks. With that said, it’s helpful to be aware of Mode $06 and how a mechanic can use it to troubleshoot a Check Engine light that comes back on after repairs have been made.
That level of troubleshooting is best left to a professional mechanic with a lot of experience and know-how in scantool diagnostics arena. But even if you have a scanner that has Mode $06 ability, it’s doubtful you would ever have the need to delve that far into the on-board diagnostics. So many of these diagnostic tools can’t even access Mode $06. Most of the scanners that parts stores employees typically use to perform plug-in diagnostic checks on customers’ cars are basic code fault readers or entry-level scanners. It turned out to be the ultimate of diagnostic information - provided you can figure out how to read and use it.īefore we go any further, we should say that few counter professionals will ever use Mode $06 to assist a customer analyze a Check Engine light. But as time went on, some very tech-savvy technicians discovered that Mode $06 contained a plethora of useful diagnostic information. It was not supposed to be a readily accessible scantool data for evaluating the operation of various components in the engine management and emission control systems.Ĭonsequently, many older scan tools lacked the capability to access and display Mode $06 data. It was supposed to be “hidden” data used by the OBD2 system to find faults and configure fault codes. Mode $06 is one of the nine diagnostic modes that is part of the OBD2 onboard diagnostics system on all 1996 and newer vehicles… which can be easily scanned with professional OBD2 scanner.Īs originally created, Mode $06 was not designed for use by technicians.
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