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H48 on a 94 LT1?

Paul Higg

Well-known member
Joined
Feb 22, 2008
Messages
1,195
Location
Georgia
Corvette
2007 Monterey Red
Can anyone tell me where in the FSM the code H48 is? I looked through the entire FSM and I cannot seem to find what H48 means. Junk says it was a "miss" but I'd like to see it in black & white. I trust Junk, it's just that I wanna see it.

Thanks.

Paul
 
Can anyone tell me where in the FSM the code H48 is? I looked through the entire FSM and I cannot seem to find what H48 means. Junk says it was a "miss" but I'd like to see it in black & white. I trust Junk, it's just that I wanna see it.

Thanks.

Paul
I haven't a Clue why it's not in the FSM!!But this is out 1 of the Reference books that came with 1 of my scanners!!
The H stans for History,Meaning that it has done it,but is not doing it Now!! 48= Misfire Symptom, meaning Misfireing on 1 or more cyclinders!!:upthumbs
 
Junk, I JUST found it. It is because I ran it without the air bridge containing the MAF. It is totally normal to set this DTC if the MAF is disconnected.

Thanks for your help. I was JUST about to post what I found when you posted first.

I appreciate all your help.

Paul
 
Can anyone tell me where in the FSM the code H48 is? I looked through the entire FSM and I cannot seem to find what H48 means. Junk says it was a "miss" but I'd like to see it in black & white. I trust Junk, it's just that I wanna see it.

Thanks.

Paul

Book 2.....Driveability & Emissions Vin P, Page 6E3-A-101

DTC 48 Maf sensor circuit.
 
Thanks Rabbit, I found it. It was because I had the air bridge out with the MAF disconnected while I ran the engine.

Thanks.
 

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