s300 transmission malfunction

s300 and SManager software questions & answers
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wllwiser9
Posts: 3
Joined: Sat Mar 14, 2020 11:42 am

s300 transmission malfunction

Post by wllwiser9 »

Sorry in advance but I have an automatic trans.
I have a 99 honda prelude base
Installed a p28 ecu with the s300 now I'm getting a blinking D4 meaning there's a trans malfunction but my trans is fine.

Question is how do i delete the code? Obd2 scanner doesn't work anymore and it doesn't come up on the error code on s300
so puzzled on how I can delete codes.

Any advice I appreciate, Thanks

TTR
Posts: 45
Joined: Wed Mar 31, 2004 8:48 pm

Re: s300 transmission malfunction

Post by TTR »

P28 is an OBD1 ecu so you loose OBD2 diagnostics. S300 doesn't support automatic transmissions at all. Put the OEM ecu back in it.

wllwiser9
Posts: 3
Joined: Sat Mar 14, 2020 11:42 am

Re: s300 transmission malfunction

Post by wllwiser9 »

It was working fine for days after the install. And I've seen s300 installed on automatics

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Spunkster
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Joined: Fri Sep 20, 2002 5:06 pm
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Re: s300 transmission malfunction

Post by Spunkster »

This is not recommended or supported by Hondata.

wllwiser9
Posts: 3
Joined: Sat Mar 14, 2020 11:42 am

Re: s300 transmission malfunction

Post by wllwiser9 »

Thanks. Converting it into a manual now.

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