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Post by octaviafuzz on Apr 26, 2021 19:41:16 GMT
Hi Is it possible to see when, what time and date a faulty code has occurred. I can just see if its sporadic/static and the date when I did the scan. Not when the actually error occurred. Its the new gen /iOs.
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Post by dv52 (Australia) on Apr 26, 2021 20:51:27 GMT
octaviafuzz : I'm not associated formally with OBD11 so I have no idea how the software implements the OBD Standards that underpin the operation of the device. However, I very much doubt that when OBD11 extracts fault data from the modules in the car, it withholds any information. So I suspect that the answer to your question is that if the module has date/time-stamped a fault code, then it will be reported by OBD11. It should be understood that there is not just one category of DTC (Diagnostic Trouble Code); the OBD standards define a number of different categories of faults in a type of hierarchy - depending in the main on how many times the same error is detected by the module within a single ignition cycle, or across multiple ignition cycles. For example, in the initial phases of a developing intermittent fault, the DTC may be defined as what the OBD Standard calls a Soft, or Pending Trouble Code. These "immature" codes can be set for many different reasons and their detection by the module does not mean the component in question is likely to fail soon. In most cases, these codes simply mean that the module has noticed an irregular behavior in a component and it will continue to monitor the system to see if the irregularity becomes more important. And within the Soft/Pending category of Trouble Codes, the OBD Standard further sectors faults into sub-categories (i.e. Type A and Type B) depending on how many times the fault re-appears on a subsequent ignition cycles Of course, the other category of DTC that the OBD Standard defines is Hard, or Confirmed Trouble Code which may, (or may not) be associated with an intermittent fault (i.e. the error message will read "intermittent confirmed") and it may (or may not) result in an warning light on the dashboard The reason for explaining these different sorts of DTC is to point-out that the OBD Standard specifies that different amounts of data is to be recorded about the faults depending on the category. So, bottom line - I suspect that if the fault in your error report doesn't have a date/time-stamp, then the module in the car that identified the fault didn't think that it was necessary to record this data Don
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Post by octaviafuzz on Apr 27, 2021 9:37:32 GMT
Thank you for a very informative answer. That will explain it.
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