Code PO 300H question
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Racer
Joined: Sep 2003
Posts: 319
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From: N.Y
Code PO 300H question
Check engine light on steady...Gas cap tight..Coming up with PO 300H code. I know PO 300 is engine misfire detected. What does the H stand for in PO 300 H ? Oh and engine isnt misfiring...thanks
Safety Car
Joined: Feb 2002
Posts: 3,726
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From: Montoursville Pa
Originally Posted by JoeyNigs
Check engine light on steady...Gas cap tight..Coming up with PO 300H code. I know PO 300 is engine misfire detected. What does the H stand for in PO 300 H ? Oh and engine isnt misfiring...thanks
so you ar ok now
Tech Contributor
Joined: Dec 1999
Posts: 32,910
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From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
If you set the code, you had some sort of engine miss fire at some time. If you run it yo to red line, do you detect any misfire??
Yep,,,,H stands for History and C means Current or happening right now.
BC
Yep,,,,H stands for History and C means Current or happening right now.
BC
