If you can unhook the battery cable to rid the truck of a check engine light .. Is that just a soft code??

 

Surely someone must have an Idea...?

PEaCE....................

 

i sent you an e-mail through NLOC with an answer

 

Hey Thanks ...

PEaCE...........

 

A "soft code" is considered a code that stores in memory, but does not set a check engine light. A "hard code" is a code that immediately turns the light on, like an electrical default for example. Those terms are more for the older EEC4 vehicles. On EEC5 (OBD-II) vehicles, the PCM decides what sets the light and what doesn't. Most of the time, the computer will set the light if it sees the same fault for 3 consecutive drive cycles. So you can have a code that's in memory, not setting a light, and a day later it sets the light.

All codes are cleared with a battery reset or KAM (keep alive memory) reset using a scantool. The only code that I've ever seen NOT reset with the battery is a P1260 code on some vehicles, which is a "theft detected" PATS code that is set because of a fuse that blows if you remove the PCM on certain cars the wrong way (not our trucks).

Hope this helps.

 

Nice answer Sal.
That is what these boards are all about.