Question Codes 15 & 19

STOCK 90 SC

Registered User
My Check engine light comes on different occasions, But i don't know why.
I ran the codes KOEO and came up with.
15-PCM read only memory (ROM) test failed.
19-No power to EEC processor or failure in PCM internal voltage.
I fell no power loss or problems with the car.
Or any difference with the check engine light on or off.
Any suggestions? I was just wondering if my EEC is on the way out.
:confused:
 
There is a keep alive memory fuse you need to check. I beleive it is in the power distribution box by the battery. Make sure that fuse is good then recheck codes.

Jerry
 
Still shows code 15

O.K. i replaced all the fuses. i idled for a while then ran the codes and i still have the code 15. Any other ideals before i start worrying about replaceing the EEC. :mad:
 
It was a Hypertaceh chip problem.

I pulled the EEC and found a Hypertech chip attached, I've read posts about Hypertech, and if I knew it had the chip I could have saved alot of time and aggravation.
 
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