H Codes
Thread Starter
Intermediate
Joined: May 2011
Posts: 43
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H Codes
I pulled some codes on my 95 this weekend using the paper clip method. Worked great. My question is that in front of each code there was an "H". For example H 32 or H 34. What does the H stand for?
Le Mans Master
Joined: Dec 2000
Posts: 7,839
Likes: 22
From: San Diego, Ca
Maybe - and they will go away with 100 ignition cycles as long as they don't become current. But, I'd be concerned about the 32 which is only going to be Current when the component or components are active and that's EGR which is only commanded at Cruise. If you want to see if it's a problem, clear it and then datalog or wait to see if the Check Engine Light comes on with a steady speed, coolant up to operating temp. If so, there's a fault in the EGR circuit/system which you'll need to troubleshoot.
