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Hey there I've had this problem for quiet some time now and am seeking desperate rb guru knowledge,so my series 2 rb25det auto r33 is reading error code 21 thru the diagnostic port , iknow its ignition signal code ,I've replaced coils ,sparkys (twice),CAS,AFM,and still the car didn't start? Now funny thing igot ahold of a rb25de auto ecu and loom wired it up too see if it will start and it DID on 25de brains(ecu)? yet no go on my 25det auto ecu ? Does this mean the ecu needs resetting or perhaps fried ? This problem just ocured out of the random after turning car off 1 day ?!?!? All help apreciated

IMG_20160706_164158.jpg

Sounds like it. Next step is to try to borrow a S2 25DET ecu (preferably auto but any would do for start up) and if that works you can start looking for a proper replacement. You could try taking the lid off yours to look for any obvious damage that you might be able to repair

I'm in wellington and I'm tryna find a s2 25det auto ecu proving to be a mision and have removed cover couldn't see any obvious damage my guese is replace ecu due to car starting on a auto 25de brain 

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