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Discussion Starter #1
Dears,
1991 e34 m5 European i dont see light on check engine .

New bulb installed.
Ignition on it stays off.
temp sensor and o2 sensor errors are shown with scanner. I should have check engine flashing.
Any idea where to start .
 

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In my understanding, there is no CEL on Euro 3.6L, as most of the pre-OBD2 Euro BMW.

CEL became mandatory in Europe only from year 2001 with Euro 3 norms (even if many cars had it before that year). This stuff was pushed way earlier in the US by California and since english-speaking Internet is mostly American you may feel all cars have that but they don't :D
 
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