89 900 ECU codes - Saab 900 Bulletin Board - Saabnet.com
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89 900 ECU codes
Posted by carol in TX [Email] (more from carol in TX) on Sun, 19 Jan 2003 22:21:41
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I have been struggling with my 89 900 for some time. First problems were idle-hunting and cold start problems - we have ultimately solved this with new ignition module but now after warm-up it seems to be running rich and I am getting 12111 and 12112 codes from the ECU which are O2 sensor adaptation faults. I do not understand what this code means. I have replaced the O2 sensor (with another used one) and checked what I can but I don't seem to be able to make this code go away. The car is running better now but I am still concerned that the mixture is not right. I have tested the throttle sensor for continuity and it appears to be open and closed correctly with the throttle. I cleaned and ohmed the AIC and it seems okay (maybe). We have changed AMM's and ECU's without affect. Any suggestions?
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- 89 900 ECU codes, carol in TX, Sun, 19 Jan 2003 22:21:41 <-- Viewing This Message
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