Camshaft Position Sensor? Need Help!

Hey guys! Thanks for stopping by.
Recently I got a new code and several new symptoms that my car never had before.

I start with the codes:
P0313 - Misfire... I had that before... Still can't rid of it, but I am not really concerned about it much.
P0365 - Camshaft Position Sensor B Bank-1... Now this one is new! I never had it before.
P0430 - Catalyst Eff... I had this one for a while... Couldn't figure out the reason... Some say, O2 sensors, others say exhaust leak... Couldn't find exhaust leak... so probably just need to change the O2s.

Anyway, P0365 is a new code and here are the symptoms that I started having:
1. Between 55 and 65 mph, car starts shaking very noticeably.
2. Acceleration! Sometimes it is awesome... just like any Bimmer should be, but sometimes is it horrible! You press on the gas and press... and nothing... and then suddenly the rpm just flies through the roof.
3. When I break, the car gets shaky sometimes.
4. Sometimes, rarely, I have a bad start, kind of hesitated.

Now, I had a bad oil leak from my VC. And on the camshaft seonsor, was a little oil... I cleaned it out thoroughly with the electrical cleaner though... but it didn't solve the problem.

My Vanos seals are new, fuel filter is new, fuel pump new, spark plugs new, coil boots new, VCG, oil separator, NO vacuum leaks, oil is fresh... Just in case for you guys to know lol

If anyone has ever had this P0365, please chime in. If anyone knows of symptoms of bad cam sensor B bank 1, whatever that is... chime in!

Thanks in advance!

I'd be chasing the P0313. That's a misfire in cylinder #3 and that can cause your rough running symptoms.
P0430 is probably a bad catalytic converter. Big money.
P0365 is probably cheapest of all. Cam sensor or wiring.
I'm not an expert with BMW but that's my .02

If you replace the cam sensor make sure is oem, the eBay or aftermarket don't work right...

Originally Posted by shovelit

I'd be chasing the P0313. That's a misfire in cylinder #3 and that can cause your rough running symptoms.
P0430 is probably a bad catalytic converter. Big money.
P0365 is probably cheapest of all. Cam sensor or wiring.
I'm not an expert with BMW but that's my .02

Thanks! I replaced the spark plugs and coil boots... so then the coil number 3... hmmm, gotta try that!

Originally Posted by Eliott's-BMW

If you replace the cam sensor make sure is oem, the eBay or aftermarket don't work right...

Thanks! Will do! Already had a bad experience with a sensor from eBay once lol

Mr.farukh,
I am dealing with exhaust CPS error as well.
Same thing as you had, VCG leak poured into the sensor and connector.

I ordered the sensor, o-ring and the bolt from fcpeuro.
Went to replace it, but for the life of mine couldnt take the stupid bolt out. Frustrated I just cleaned at connectors and the sensor harness with MAF cleaner.

The light has been off for me for almost a week, hopefully it will stay off. Else I do have the sensor, o-ring and the screw handy. But that 5mm hex is driving me crazy. I already dropped one 5mm allen key into the underbelly, I have one more but it just doesnt budge. **** scared to strip that bolt as well.

Originally Posted by trj

Mr.farukh,
I am dealing with exhaust CPS error as well.
Same thing as you had, VCG leak poured into the sensor and connector.

I ordered the sensor, o-ring and the bolt from fcpeuro.
Went to replace it, but for the life of mine couldnt take the stupid bolt out. Frustrated I just cleaned at connectors and the sensor harness with MAF cleaner.

The light has been off for me for almost a week, hopefully it will stay off. Else I do have the sensor, o-ring and the screw handy. But that 5mm hex is driving me crazy. I already dropped one 5mm allen key into the underbelly, I have one more but it just doesnt budge. **** scared to strip that bolt as well.

Damn! Well, at least the cleaning worked for you! I must admit, it kind of worked for me for the first 15 minutes of test drive right after, but the hash driving around 60 came again... I will try to do another cleaning again tomorrow!

Originally Posted by farukh

Hey guys! Thanks for stopping by.
Recently I got a new code and several new symptoms that my car never had before.

I start with the codes:
P0313 - Misfire... I had that before... Still can't rid of it, but I am not really concerned about it much.
P0365 - Camshaft Position Sensor B Bank-1... Now this one is new! I never had it before.
P0430 - Catalyst Eff... I had this one for a while... Couldn't figure out the reason... Some say, O2 sensors, others say exhaust leak... Couldn't find exhaust leak... so probably just need to change the O2s.

Anyway, P0365 is a new code and here are the symptoms that I started having:
1. Between 55 and 65 mph, car starts shaking very noticeably.
2. Acceleration! Sometimes it is awesome... just like any Bimmer should be, but sometimes is it horrible! You press on the gas and press... and nothing... and then suddenly the rpm just flies through the roof.
3. When I break, the car gets shaky sometimes.
4. Sometimes, rarely, I have a bad start, kind of hesitated.

Now, I had a bad oil leak from my VC. And on the camshaft seonsor, was a little oil... I cleaned it out thoroughly with the electrical cleaner though... but it didn't solve the problem.

My Vanos seals are new, fuel filter is new, fuel pump new, spark plugs new, coil boots new, VCG, oil separator, NO vacuum leaks, oil is fresh... Just in case for you guys to know lol

If anyone has ever had this P0365, please chime in. If anyone knows of symptoms of bad cam sensor B bank 1, whatever that is... chime in!

Thanks in advance!

First off get your o2 sensors replaced, atleast the precat ones(though you are advised to change the post ones aswell).
Failing o2 sensors will fool the EMS that your car is running lean and will dump alot more fuel into the engine , giving sluggish performance and lots of other cons aswell.

The cat's in these cars last a lifetime , no need to go spend money on a new manifold before you've replaced the o2's.

As for your symptoms:

1. Tires,driveshaft or any driveline part can do this, most often it's unbalanced tires or a bad wheel bearing (but that would be audible and constant)
Anything you feel or hear at a certain speed is not related to the engine, if it's at a certain RPM then yes it's engine.
2. Camshaft sensor, stock EMS defaults to 360 degree engine cycle instead of 720 degree cycle, meanig alot less performance.
3. FCAB's or your front rotors are bad.
Do this to see if it's the FCAB's (or jack the car up and shake the wheel with your hands at 9 and 3 'o clock, if you can the fcab is bad)



4. Camshaft sensors again.

The B sensor is the exhaust side sensor.

Originally Posted by trj

Mr.farukh,
I am dealing with exhaust CPS error as well.
Same thing as you had, VCG leak poured into the sensor and connector.

I ordered the sensor, o-ring and the bolt from fcpeuro.
Went to replace it, but for the life of mine couldnt take the stupid bolt out. Frustrated I just cleaned at connectors and the sensor harness with MAF cleaner.

The light has been off for me for almost a week, hopefully it will stay off. Else I do have the sensor, o-ring and the screw handy. But that 5mm hex is driving me crazy. I already dropped one 5mm allen key into the underbelly, I have one more but it just doesnt budge. **** scared to strip that bolt as well.

Get yourself one of these :


You'll thank me if you ever do some maintnance on your car

SWEturbo: What is that set called if I wanna do a search on amazon?

Originally Posted by SweTurbo

First off get your o2 sensors replaced, atleast the precat ones(though you are advised to change the post ones aswell).
Failing o2 sensors will fool the EMS that your car is running lean and will dump alot more fuel into the engine , giving sluggish performance and lots of other cons aswell.

The cat's in these cars last a lifetime , no need to go spend money on a new manifold before you've replaced the o2's.

As for your symptoms:

1. Tires,driveshaft or any driveline part can do this, most often it's unbalanced tires or a bad wheel bearing (but that would be audible and constant)
Anything you feel or hear at a certain speed is not related to the engine, if it's at a certain RPM then yes it's engine.
2. Camshaft sensor, stock EMS defaults to 360 degree engine cycle instead of 720 degree cycle, meanig alot less performance.
3. FCAB's or your front rotors are bad.
Do this to see if it's the FCAB's (or jack the car up and shake the wheel with your hands at 9 and 3 'o clock, if you can the fcab is bad)



4. Camshaft sensors again.

The B sensor is the exhaust side sensor.



Get yourself one of these :


You'll thank me if you ever do some maintnance on your car

Nice! My tires in fact are messed up! Gotta check the pressure! I don't have the stock rims anymore (325i 2002), instead I have 18" m3 oem rims, all fronts. And I have different tires on all 4 Also, should the psi be the same as it was on old wheel around 38?
And I will definitely check everything you advised!

Originally Posted by SweTurbo

Get yourself one of these :

You'll thank me if you ever do some maintnance on your car

Yah, I am planning to get those. I tried with similar ratcheting torx(advised on the DIYs) as well but the screw didnt budge and tried to strip. So I stopped. Will buy those and try it again.

Thanks