[marc123]

It's a bmw 320i 2008, 104 000km, N43B20 engine.

Codes present
2C32 lambda control 2
2A99 crankshaft - exhaust camshaft reference
2AA1 camshaft sensor, exhaust, signal
2C6C mixture control to catalytic converter.

Running rough at cold start, intermittently runs rough or get's low on power and shakes, sometimes the engine light comes on but it sometimes goes away.
Have changed camshaft sensor trying to get rid of the 2AA1, did not work, changed both vanos solenoids, did not work.

So now i'm about to try one of the lambda probes, but im not sure which one is the correct one, on realoem there seems to be 3 different probes (but maybe realoem isn't showing the actual N43B20 engine?), 2C32 seems to indicate pre cat, so its down to two probes? any help would be greatly apreciated.

01 Lambda probe, black L= 550MM 1 11787539123
02 Regulating lambda probe L= 720MM 1 11787569930

https://www.realoem.com/bmw/enUS/sho...diagId=18_2087