2001 E46 316i se M43 Crank Position Sensor & Cam position Sensor

stu_wal · May 2, 2011

I'm hoping someone may be able to help with a problem i'm currently having.

I have a 316i se 2001 M43 engine, I have been having problems when starting, usually after a short journey, when i go to restart the car the rev counter starts going up and down on it's own and then the traction control light comes on and stays on. Sometimes it will fire, idle rough for 5 seconds or so then cut out, other times it will not start at all

I have plugged it in with a cheap OBD2 code reader and the fault codes listed were P0340 (current) cam position sensor and P0355.(pending) Crank position sensor.

Cam somebody clarify, as there seems to be lots of threads about this same problem, with several different answers. I am reluctant to change both the sensors if it is not totally nessercary. Are the problems i'm getting most likely the cam sensor or the crank sensor or both?

Also if somebody could post pictures of the locations of both sensors that would be great. M43 engine

Any help would be gratefully received. Thanks

dailydoggy · May 2, 2011

your gonna have to change them both to crack this nut mate..

cam position is at the front on the end of the engine just below the rocker cover line..

crank sensor is at the rear near the starter motor and flywheel housing on the right hand side..

crank sensor no14

cam sensor no4

change cam one first see how it goes its an easy 10 minute job..

stu_wal · May 2, 2011

I thought that would be the case, just needed some clarification before I order the bits!

Thanks for the speedy response!!

dailydoggy · May 2, 2011

BMWpartsonline do an OEM crank sensor at a fraction of the dealer price..

http://www.bmwpartsonline.co.uk/Product-477/

the cam sensor tho i would avoid! none OEM ones are usually shite...

white.akita · May 2, 2011

i had the same problem on a 530d, changed the crank sensor but made no difference then changed the cam sensor and it was fixed.
if it was me id change the cam sensor first.

Ben123 · Oct 25, 2012

I've got a bmw 316 when I purchased it it had the cam position sensor whites cut I have since fitted a new one to find i

I have a bmw 316 that will not rev if I lug the cam position sensor in

jcjdavis1 · Oct 25, 2012

Hi. I did the crankshaft sensor on my M43 engine so if you need any tips just ask. Jim

2001 E46 316i se M43 Crank Position Sensor & Cam position Sensor

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