Question about 2004 Saab 9-3
P1128 on Motronic (1996 900 S) indicates multiplicative adaptation fault > 22%. Symptoms are poor driveability, hunting idle speed, possibly in combination with other DTCs (e.g. low fuel level, MAF (mass air flow sensor just behind the intake filter), misfiring).
WIS instructs one to 1st check wiring harnesses and connectors for places where shorts may have developed. Visual inspection results should be verified with multimeter. Check all air hoses and vac lines for leaks. Also check the throttle body o-ring which is a known problem. Check the evap purge cannister. Finally, electrically test the MAF.
Posted on Dec 22, 2008
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
Here's a link to this great service
Posted on Jan 02, 2017
Tips for a great answer:
Oct 19, 2013 | 1995 Saab 900
Nov 01, 2010 | Saab 900 Cars & Trucks
Jan 08, 2010 | 1995 Saab 900
Nov 12, 2009 | 1995 Saab 900
Nov 04, 2009 | 1995 Saab 900
Sep 15, 2009 | 1997 Saab 900
Jul 17, 2008 | 1995 Saab 900
346 people viewed this question
Usually answered in minutes!