C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

93 LT1 Error Codes Video

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Old 08-25-2013, 07:49 PM
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higgyburners
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Default 93 LT1 Error Codes Video

Went to Portland for a gun show yesterday, about 2 hours away and got a Service Engine Soon signal. It was driving fine no problems at all, I did use the cruise control for the first time at about 71 MPH. When I got there I shut off the car and turned the key back to the on position and no SES light, this did the same thing on the way home. Here a couple of videos of the codes. 1: H72 and 4: H32

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Old 08-25-2013, 08:52 PM
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vetteoz
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Originally Posted by higgyburners
1: H72
LCD dimming open

Originally Posted by higgyburners
4: H32
EGR

As they are both H; history , I would clear the codes and see if they/ any come back as C ; current
Old 08-25-2013, 09:08 PM
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higgyburners
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Thanks vetteoz, I will figure out how to clear them tonight and take it back out on the highway tomorrow after work to see if it happens again. Would the SES light come on from codes in history? thanks again.
Old 08-25-2013, 09:24 PM
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Originally Posted by higgyburners
Would the SES light come on from codes in history?
The way I see it a code would have to Current , before it can become"History" so yes.
IIRC ,
a code seen is only nominated C if the code is still present;
H means the code " has been seen" in the past but is no longer present

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