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Solid CEL, Solid Red light..Is my S300 bad?

Posted: Thu Sep 05, 2013 7:24 pm
by Potterbilt
I went to start my car yesterday and when I turned the key to the on position I heard the Fuel pump relay and then noticed I have a solid CEL. I opened my laptop to pull the code from the s300 and it wouldnt show any. I can download from the ecu but I cant use any real time sensors and it wont allow me to upload any changes. When I try to erase the ecu it goes through the process and then at the end says "couldnt erase ecu". The car starts but dies after 2 seconds.

So I grabbed another ecu from a friend who also runs s300 and I swapped my s300 into his ecu and I get the same results.

What can cause this,and I where do I go from here.

Serial # S300-3261
Version: 2.2.7.0

Car is 96 Civic coupe
B18c1 Built, ITR cams, 5858 turbo, 1150cc injectors

Ecu is a p28 from phearable.net with PWM, not sure what ecu the loaner ecu was but it was working fine before and after using it to troubleshoot. I was even able to upload my tune to his ecu/s300 and start/drive my car just fine.

Re: Solid CEL, Solid Red light..Is my S300 bad?

Posted: Fri Sep 06, 2013 9:33 am
by Spunkster
Send an email to support <at> hondata.com with the following and I will issue an RMA and give you further
instructions (include a link to this thread:

Name:
Address:
Phone:
Email:
Serial#:
Description of problem:

Re: Solid CEL, Solid Red light..Is my S300 bad?

Posted: Fri Sep 06, 2013 9:49 am
by Potterbilt
Email sent,

Thanks