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Old 10-27-2008, 01:12 PM   #1
Osgood30
Scooby Specialist
 
Member#: 20437
Join Date: Jun 2002
Chapter/Region: Tri-State
Location: Downingtown, PA
Vehicle:
1999 Impreza RS
STI Ver7

Default STI V7 CEL - P1230 Manufacture Control. Fuel Air Metering

I have done a lot of searches and read many threads here, but even though I have found topics on the same code, I don't seem to find an answer to my problem.

The background:
I have 1999 RS that I swapped 2001 JDM STI V7 Engine/Drivetrain Wiring was done by Zephyr. Swap was done 3 years ago. I installed a brand new Fuel pump controller from 2002 WRX. Car ran with no problems and no CELs fro three years. Now, four month ago I got CEL and it returned P1230. I have been driving the last four months with that CEL, while trying to figure out what is wrong. There is absolutely no issues with performance and the car still has loads of power all the way to 8K RPMs like previously. However I need to fix this so that the CEL will go away because its annoying and because I need to get the car inspected.

I have replaced Fuel Pump Controller but nothing has changed. Still no performance issues and still CEL is on.

Additionally, the code description that I pull from the scanner has slightly different description than what I see listed on on the web.

This is the description that I see everywhere on the web
P1230 Fuel Pump Control Unit Malfunction

And this is what I pull with the scanner from my ECU
P1230 Manufacture Control. Fuel Air Metering

Can someone please help me with this?

Thanks in advance.

Alex
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Old 10-28-2008, 12:46 AM   #2
bobjr94
Scooby Newbie
 
Member#: 6176
Join Date: Apr 2001
Chapter/Region: NWIC
Location: Roy,WA
Vehicle:
15 WRX, 04 wrb STi
85 wrb BRAT

Default

You are still using the 99RS ECU or what year? There is no code 1230 for a 99 in my info.

Here is the repair info for a 2002



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Old 10-28-2008, 09:04 AM   #3
Osgood30
Scooby Specialist
 
Member#: 20437
Join Date: Jun 2002
Chapter/Region: Tri-State
Location: Downingtown, PA
Vehicle:
1999 Impreza RS
STI Ver7

Default

I am using 2001 V7 STI ECU. So your diagrams might be useful. I will check it out. Is that specifically for this code number?
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Old 10-28-2008, 10:13 AM   #4
bobjr94
Scooby Newbie
 
Member#: 6176
Join Date: Apr 2001
Chapter/Region: NWIC
Location: Roy,WA
Vehicle:
15 WRX, 04 wrb STi
85 wrb BRAT

Default

It is how to fix that code,I would think steps would be similar on your ecu.
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Old 12-26-2009, 11:08 PM   #5
MY00Forest
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Member#: 75451
Join Date: Nov 2004
Location: westminster, md
Vehicle:
2000 Forester
black

Default

did this fix the problem?
im experiencing similar symptoms!
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