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Re: Check engine fault 1-2-2-5-1 Posted by JustinHiFi [Email] ![]() ![]() In Reply to: Check engine fault 1-2-2-5-1, Mike H, Wed, 5 Dec 2001 22:49:11 Members do not see ads below this line. - Help Keep This Site Online - Signup |
On my '91 900S, (after leaving the SOC 01) the check engine light popped on. I scaned for the codes and it came up with over 8 of them. Most relating to the O2 sensor, but others to the ECU unit. At first I thought someone fiddled with something during the Concours d'Saab (2nd place!!). I was getting both codes, one saying it was running lean, the other rich. The ECU one said some fault had occured. I was sorta pissed. After the drive home, 40min, I began to troubleshoot. I began with the basic #1 step, fuses. After that I tested the o2 sensor and found it to be faulty. Ordered a new one from James at Saabstory, installed it 4 days later.
All of the faults did not disappear all at once. I reset it, and others would pop up. Reset again, others. I was about to begin to look into new ECU's. Anyway I pulled the battery terminals over night. No luck.
The next day I went to Wal-Mart and exchanged my Everstart battery for a new one. Reset the computer one last time, and boom! NO FAULTS! I think that the condition of the battery and the bad o2 sensor messed things up for a while. I have no real evidence that the battery cured it, but it works for me! :-)
So I'd have the battery tested and replace the o2 sensor...
Hope this helps!
JustinHiFi
'91 900S
posted by 206.244....
_______________________________________ JustinHiFi Strictly Saab Inc. Melbourne, FL Current: -1991 900 S-PG MT -2001 9-5 Wagon AT -2006 9-3 SS AT Past: -1964 96 2-Smoke MT -1967 96 v4 MT -1983 900 Turbo MT -1985 900 SPG MT -1988 9000 Turbo Black MT -1988 9000 Turbo White AT -1990 900 SPG Red MT -1990 900 SPG Black MT -1991 9000 Turbo MT -1991 900 SPG Red MT -1992 9000 Griffin AT -2000 9-5 Aero Sedan MT -2001 9-5 Aero Wagon MT -2008 9-3 2.0T Sedan AT
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