2004 320d - Camshaft sensor fault code 3EC0

matthew_henson · Oct 15, 2011

After a week of no fault codes, my car has materialised a completely new one!:mad

It is saying 3EC0 camshaft sensor, it has counted the error 191 times but no obvious loss of performance or power. Any thoughts?

Also the mass adjustment seems to more diverse on cylinders 1 and 4, 1 is reading +1.2 and 4 -1.3 the other two are +0.2.... normal or not?

As discussed before fault codes and faults are not always the same thing, my turbo actuator faults (short circuit) have completely gone away on cleaning the MAP sensor.... hmmm

matthew_henson · Oct 18, 2011

Simon... need you thoughts on this :thumbsup

Ronnie · Oct 18, 2011

Has your MPG risen?

matthew_henson · Oct 18, 2011

A little but not much, just made up a leak off tester from ebay for £14!! will do that test first, also no more smoke that normal (small amount accelerating hard in 2nd gear) more concerned about the camshaft sensor. Engine vibrates a lot when idling (about 15mm of shake) but it could just be engine mounts.

SlowTech · Oct 18, 2011

Dirt on the sensor perhaps?

the mass adjustment is balancing out the 2 cylinders, iirc TheEnd mantioned they operate in pairs.
so one is overfueling and 4 is underfueling to compensate.

Xmak 330d · Oct 18, 2011

I remember reading a thread once where someone changed there cam sensor on I think a 330i.

When the old one was unplugged there was oil on the contacts, sensor had obviously let it through from the cam cover.

Might be worth checking yours Matthew. :thumbsup otherwise out of ideas:confused

2004 320d - Camshaft sensor fault code 3EC0

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