Engine shuts off during ODB scan
New User
Joined: Nov 2017
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more reading for folks that are interested:
https://www.elmelectronics.com/wp-co...1/ELM327DS.pdf
https://www.elmelectronics.com/wp-co...1/ELM327DS.pdf
Just in case the rest of you are wondering, these are what the 9 OBD2 modes are. I know I was.
@rvborgh1 , the thread you replied to is 9 years old but your information is much appreciated. It sounds like you have delved deeper into OBD2 than most of us shadetree mechanics on here have.
@rvborgh1 , the thread you replied to is 9 years old but your information is much appreciated. It sounds like you have delved deeper into OBD2 than most of us shadetree mechanics on here have.
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Joined: Dec 2011
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Thank you @rvborgh1 for the ELM document.
Fun Fact: The word "simply" is repeated 78 times in that document, and I have yet to find where this word was appropriately applied.
BTW, any relation to @rvborgh?
No worries, @FordTruckNoob.
Fun Fact: The word "simply" is repeated 78 times in that document, and I have yet to find where this word was appropriately applied.
BTW, any relation to @rvborgh?
No worries, @FordTruckNoob.
4wd Low
Joined: Feb 2016
Posts: 10
Likes: 1
Sorry for the necromancy, but it is warranted.
I just brought my truck in for emissions testing in CT and the operator said the truck died 3 times after connecting the OBD2 connector.
They got new equipment and maybe the invalid OBD2 protocol is the default. But I suspect more old diesel trucks will be falsely failed.
I brought mine to another emissions center were they tested it jus tailpipe opacity and it passed.
I just brought my truck in for emissions testing in CT and the operator said the truck died 3 times after connecting the OBD2 connector.
They got new equipment and maybe the invalid OBD2 protocol is the default. But I suspect more old diesel trucks will be falsely failed.
I brought mine to another emissions center were they tested it jus tailpipe opacity and it passed.
2nd Gear
Joined: Feb 2025
Posts: 2
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1999 F350 7.3. Scanner won't read my 99. F350🤔🤔
mine is doing same can't read my 99 f350 7.3. It's a new scanner zmoon zm201 obd2 don't know what to do michaelfoster251msf (at) gmail (dot) com if any knows what's up let me know thanks
Last edited by Y2KW57; Mar 1, 2025 at 11:30 AM. Reason: Deparsed VB code from eml address to reduce spider bot reading. Post author remains free to edit post to remove or restore
Cargo Master
Joined: Oct 2007
Posts: 2,712
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From: BoCoMo
Get information from the forums or privately.
Re-read the whole thread.. Standard OBDII Readers Do Not work correctly (speak the same language) on the '99-03, 7.3s.
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