Hi all
Had this E46 in with 3 codes and management lamp on. New post cat o2 sensor cured one but the other 2 wont clear.Launch says 2 codes, 2782 Camshaft sensor exhaust and 27B8 Differential pressure sensor, intake manifold-plausibility.
The Camshaft sensor has been replaced which has made no difference . I don't know where to start with the 27B8 code.
Any help please?
Emissions are all good (since the o2 sensor replacement) .Car has done about 50k miles.
Do these suffer with timing chain problems?
Thanks very much

Colin