check engine light stays while running0but with no codes

s300 and SManager software questions & answers
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liddlenakz
Posts: 1
Joined: Sun Feb 25, 2018 2:39 pm

check engine light stays while running0but with no codes

Post by liddlenakz »

hello, new to this forum stuff but my problem is this.... had my s300 setup with p28, wire harness and everything is all good. i know because the car was running fine for years. so blah blah blah ecu turned out to not read tps and map sensors. so i bought another chipped socketed p28 ecu from xenocron and installed it and now the tps and map sensors work fine and so does everything else. the car starts and runs fine but the check engine light goes off a little late after i turn key to the on position, since i kinda know it supposed to go off when the fuel pump does right??? well, anyway when i start it , the check engine light stays on and i cant see any codes being throwed on smanager! what are the possible things i can do to solve this?
help is really appreciated! thanks guys!
crluver123
Posts: 155
Joined: Tue Oct 10, 2006 10:13 pm

Re: check engine light stays while running0but with no codes

Post by crluver123 »

a solid cel with no codes is a code zero. Which is for a fault in the ecu. It could either be a bad ecu, or a bad s300 board, or a corrupt calibration file loaded in the s300.

What's the serial number of the s300?
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Spunkster
Site Admin
Posts: 22745
Joined: Fri Sep 20, 2002 5:06 pm
Location: Hondata

Re: check engine light stays while running0but with no codes

Post by Spunkster »

Have the capacitors also been replaced in this "new" ecu?

Is J12 cut on the ECU?
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