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Old 11.02.2020, 21:15
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OBD / vehicle computer question

This is a question for the car guru's

Is there a way to find out when (date / log with dates) a car developed an issue using the cars computer / OBD?

Eg: If the car's check engine light is on, can one check when it came on first? Or if it has come on before? If so the date?
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Old 11.02.2020, 21:22
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Re: OBD / vehicle computer question

On the garages they have an OBD reader but that's reading live faults.

There's ways to get historical data out of it but you'd need to have a telematics box like the one provided by TCS. Not sure you can do much about it now.
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Old 11.02.2020, 21:26
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Re: OBD / vehicle computer question

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On the garages they have an OBD reader but that's reading live faults.

Thank you.

There's ways to get historical data out of it but you'd need to have a telematics box like the one provided by TCS. Not sure you can do much about it now.
But will a telematics box give a report with past faults with date and time? Or even a date when a fault is first detected?
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Old 11.02.2020, 21:55
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Re: OBD / vehicle computer question

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But will a telematics box give a report with past faults with date and time? Or even a date when a fault is first detected?
You can only retrieve such info if your car stores such info in a logfile. If it doesn't than nobody will ever know and very large majority of cars on the road don't do this, most only give current status.

A telematics box is ment to write such data itself, so it will only keep info as of the moment of installing.
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Old 11.02.2020, 22:53
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Re: OBD / vehicle computer question

Mine will do that no problem.

Paid EUR 4 for the unlocked app as I recall.

Tom
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