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Check Engine Light: OBD Fuel Trim Error 200

posted by  Green Lantern on  Mon Mar 29 03:31 CST 2004
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last visit: Tue Oct 23 09:01 CST 2001
[RELATED]

Hello,

Just recently the check engine light in my 1991 245 (B230F) has come on. I followed the directions provided in the 700/900 FAQ section of this website for obtaining the errors produced by the onboard diagnostic system. The error code I got from the Bosch LH Jetronic 2.4 system is 2-3-2:

"Fuel trim (lambda control) too lean or too rich at idle".

Just by the smell and recent gas milage I know that the car is running too rich. If this is the case the 700/900 FAQ section informs me that I have a high fuel pressure problem or leaking injector. What is the best method to test for these problems? Could the oxygen sensor also be at fault?

Also, I unsuccessfully tried to reset the OBD system first following the Haynes and then the 700/900 FAQ section instructions. Has anyone esle encountered this problem?

Thanks for the help ahead of time.

Greg
--
1982 242 GLT, 1982 244 GL, 1983 242ti, 1983 244ti, 1984 244ti, 1986 245 DL, 1991 245






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