I have a 2000 540i with a manual transmission. I took it to get it smogged and it would not pass because of a check engine light. I then paid $190.00 to have a diagnostics run on the car. I was told that the protect check diagnositics revealed:PO443 EVAP emissions and 98 tank vent valve was the codes that came up. I was then told that it would cost another $196.00 to tell me just which sensors were the problem, then there would be an additional charge to replace the faulty parts plus the cost of the parts. How can I find out which parts are faulty without paying the additional $190.00. thanks,Joel
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The smog check requires a visual inspection of your check engine light. It has to come on for a bulb check at startup to make sure it's working. But, the light must go out after starting the engine(it cannot stay on after the engine starts during a smog check). If the check engine light fails either of these two tests, the vehicle will fail the smog check inspection. You need to have the cause of your inoperative check engine light diagnosed and repaired.
No this is not right. If you remove the battery everything resets anyways. If they are talking about relearn procedure, it should only require 50 miles. But if the light is on than either they did something wrong, created another problem, or there was already another one existing. Have the code read and let me know what it is. I'm in Ca too and used to prep european cars for smog, so I do know what I'm looking for. How did the rest do? What were the readings(if possible)?
Not a solution: This is my problem...
I needed to get my car smogged, but the check engine light was on. Took to to a local smog station that had replaced a sensor for me in the past in order to pass smog. They could not fix it. Put car in dealership garage for repairs and to date, the transmission module sensor (computer) went out and the ignition sensor was out also. The mechanic replaced both and now the code P1702 comes up. What does that code mean? My car still won't pass smog....