keep getting a 232 code HELP

[dedrums]

I have a 92 740 wagon regina changed the 02 sensor,and still getting an 232 which means self adjusting 02 sensor not operating (source of fault = intake air or fuel)can anyone tell me what the hell that means shea running alot smoother.I reset all codes and this one came up again PLEASE HELP THANKS ALOT

[Schumi 1]

Hi there, the dreaded 2-3-2, I hope your's is a simple fix. I have had a similar problem on my 93 regina and haven't fixed it yet. However, I have learned quite a bit in the process and I can offer a few places to start. First, did you clear the codes and reset the ecu (disconnect the battery for about 1hr) ? If the code returns, first thing I would do is take it to a mechanic to have a smoke test done (checks for vacuum leaks), this will save a lot of time and money replacing gaskets and such, pretty easy and inexpensive check. Then , check/clean/replace the flame trap and associated hoses. Clean the throttle body and run some fuel cleaner through the tank (I use Redline SI-1). At least at that point you will know that your fuel and air delivery are clear. Then you can start diagnosing sensors and engine management. BTW, did you make sure to install the correct "regina" o2 sensor ? I found out that even though some universal 3 wire sensors will fit, they do not operate with the correct voltage for the regina engine. Double check that before you do anything. hope this helps a bit.