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Engine hesitation, CEL on and then off ??

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Old 11-02-2016, 10:42 AM
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Macster
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Originally Posted by Porschelova
A lot of shops do not have the right code readers or they say that the car is too old for their $6,000 reader.
This one was using a SnapOn tool that connected to the standard port and did not read anything. So he pulls it out and walks over to a 2013 911 and he shows me all kinds of data.
Trying another place on Monday.
I drove it hard on the highway and ran happy ...strange.
Probably had the SnapOn code reader locked on CAN. Your car's OBD2 communication is probably ISO-9241-2 or possibly KWP2000. There is a documented protocol discovery process that a code reader can go through to, well, discover the protocol the car's OBD2 system is using.

If you are interested you can buy an OBD2 code reader/data viewer at a well-stocked autoparts store (or this being the 21st century online). Really I do not consider owning a good OBD2 code reader/data logger a waste of money as these can pay for themselves in just one use. I've owned one since sometime in 2000 and it has paid for itself many times over.



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